Vulnerability-Lookup

Search criteria

Vendor

Product

Assigner (CNA or root)

Sources

Sort by

Order

CVSS min

CVSS max

Apply ordering (override relevance)

CVE-2026-102991 (GCVE-0-2026-102991)

Vulnerability from nvd – Published: 2026-09-30 19:47 – Updated: 2026-09-30 19:54

Title

Mako: Path traversal via drive-letter URI on Windows in TemplateLookup

Summary

Mako is a template library written in Python. Prior to 1.4.2, on Windows, TemplateLookup.get_template() in mako/lookup.py resolves template URIs with posixpath, while Template.__init__() in mako/template.py validates them with os.path, which uses ntpath. A URI beginning with a drive designator causes ntpath to absorb the traversal segments before the leading dot-dot check, while posixpath resolution can escape the configured template directory. An application that passes attacker-controlled template names or include paths can disclose process-readable files on the same volume, and a targeted file containing Mako template syntax may also be parsed and executed as a template. Raw URL paths are generally normalized before reaching this form, but query strings, form or JSON bodies, route parameters, and dynamic include expressions can preserve it. This issue is fixed in version 1.4.2.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-30 19:54 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/sqlalchemy/mako/security/advis…	x_refsource_CONFIRM
https://github.com/sqlalchemy/mako/issues/441	x_refsource_MISC
https://github.com/sqlalchemy/mako/commit/000ed85…	x_refsource_MISC
https://github.com/sqlalchemy/mako/releases/tag/r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sqlalchemy	mako	Affected: < 1.4.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-102991",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-30T19:54:27.628844Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-30T19:54:41.077Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-5639-2j2p-m4mx"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mako",
          "vendor": "sqlalchemy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mako is a template library written in Python. Prior to 1.4.2, on Windows, TemplateLookup.get_template() in mako/lookup.py resolves template URIs with posixpath, while Template.__init__() in mako/template.py validates them with os.path, which uses ntpath. A URI beginning with a drive designator causes ntpath to absorb the traversal segments before the leading dot-dot check, while posixpath resolution can escape the configured template directory. An application that passes attacker-controlled template names or include paths can disclose process-readable files on the same volume, and a targeted file containing Mako template syntax may also be parsed and executed as a template. Raw URL paths are generally normalized before reaching this form, but query strings, form or JSON bodies, route parameters, and dynamic include expressions can preserve it. This issue is fixed in version 1.4.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-30T19:47:07.128Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-5639-2j2p-m4mx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-5639-2j2p-m4mx"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/issues/441",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/issues/441"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/commit/000ed85e4e48771eff460bf4fc721fb43de80e08",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/commit/000ed85e4e48771eff460bf4fc721fb43de80e08"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_4_2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_4_2"
        }
      ],
      "source": {
        "advisory": "GHSA-5639-2j2p-m4mx",
        "discovery": "UNKNOWN"
      },
      "title": "Mako: Path traversal via drive-letter URI on Windows in TemplateLookup"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-102991",
    "datePublished": "2026-09-30T19:47:07.128Z",
    "dateReserved": "2026-09-29T20:46:08.334Z",
    "dateUpdated": "2026-09-30T19:54:41.077Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-44307 (GCVE-0-2026-44307)

Vulnerability from nvd – Published: 2026-05-12 21:53 – Updated: 2026-05-13 15:00

Title

Mako: Path traversal via backslash URI on Windows in TemplateLookup

Summary

Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \..\..\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-13 14:57 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/sqlalchemy/mako/security/advis…	x_refsource_CONFIRM
https://github.com/sqlalchemy/mako/issues/435	x_refsource_MISC
https://github.com/sqlalchemy/mako/commit/72e10c5…	x_refsource_MISC
https://github.com/sqlalchemy/mako/releases/tag/r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sqlalchemy	mako	Affected: < 1.3.12

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44307",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-13T14:57:34.308791Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-13T15:00:13.642Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mako",
          "vendor": "sqlalchemy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \\..\\..\\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-12T21:53:52.826Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/issues/435",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/issues/435"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12"
        }
      ],
      "source": {
        "advisory": "GHSA-2h4p-vjrc-8xpq",
        "discovery": "UNKNOWN"
      },
      "title": "Mako: Path traversal via backslash URI on Windows in TemplateLookup"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44307",
    "datePublished": "2026-05-12T21:53:52.826Z",
    "dateReserved": "2026-05-05T19:00:06.021Z",
    "dateUpdated": "2026-05-13T15:00:13.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-41205 (GCVE-0-2026-41205)

Vulnerability from nvd – Published: 2026-04-23 18:52 – Updated: 2026-05-20 01:32

Title

Mako: Path traversal via double-slash URI prefix in TemplateLookup

Summary

Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.get_template() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.get_template(). This vulnerability is fixed in 1.3.11.

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-23 20:20 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/sqlalchemy/mako/security/advis…	x_refsource_CONFIRM
https://github.com/sqlalchemy/mako/commit/e05ac61…	x_refsource_MISC
https://github.com/sqlalchemy/mako/releases/tag/r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sqlalchemy	mako	Affected: < 1.3.11

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41205",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T20:20:51.233790Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-23T20:20:59.107Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mako",
          "vendor": "sqlalchemy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.get_template() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.get_template(). This vulnerability is fixed in 1.3.11."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-20T01:32:18.382Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-v92g-xgxw-vvmm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-v92g-xgxw-vvmm"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/commit/e05ac61989a7fb9dd7dcde6cfd72dc48328719a3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/commit/e05ac61989a7fb9dd7dcde6cfd72dc48328719a3"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_11"
        }
      ],
      "source": {
        "advisory": "GHSA-v92g-xgxw-vvmm",
        "discovery": "UNKNOWN"
      },
      "title": "Mako: Path traversal via double-slash URI prefix in TemplateLookup"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-41205",
    "datePublished": "2026-04-23T18:52:24.194Z",
    "dateReserved": "2026-04-18T02:51:52.974Z",
    "dateUpdated": "2026-05-20T01:32:18.382Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2022-40023 (GCVE-0-2022-40023)

Vulnerability from nvd – Published: 2022-09-07 00:00 – Updated: 2025-12-03 06:05

Summary

Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin.

Severity

No CVSS data available.

CWE

n/a

Assigner

mitre mitre root Scorecard

References

7 references

URL	Tags
https://github.com/sqlalchemy/mako/issues/366
https://github.com/sqlalchemy/mako/commit/9257602…
https://github.com/sqlalchemy/mako/blob/c2f392e0b…
https://pyup.io/vulnerabilities/CVE-2022-40023/50870/
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://pyup.io/posts/pyup-discovers-redos-vulner…
https://lists.debian.org/debian-lts-announce/2025…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-12-03T06:05:04.544Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/sqlalchemy/mako/issues/366"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pyup.io/vulnerabilities/CVE-2022-40023/50870/"
          },
          {
            "name": "[debian-lts-announce] 20220921 [SECURITY] [DLA 3116-1] mako security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/12/msg00004.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-27T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/sqlalchemy/mako/issues/366"
        },
        {
          "url": "https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c"
        },
        {
          "url": "https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21"
        },
        {
          "url": "https://pyup.io/vulnerabilities/CVE-2022-40023/50870/"
        },
        {
          "name": "[debian-lts-announce] 20220921 [SECURITY] [DLA 3116-1] mako security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html"
        },
        {
          "url": "https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2022-40023",
    "datePublished": "2022-09-07T00:00:00.000Z",
    "dateReserved": "2022-09-06T00:00:00.000Z",
    "dateUpdated": "2025-12-03T06:05:04.544Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-102991 (GCVE-0-2026-102991)

Vulnerability from cvelistv5 – Published: 2026-09-30 19:47 – Updated: 2026-09-30 19:54

Title

Mako: Path traversal via drive-letter URI on Windows in TemplateLookup

Summary

Mako is a template library written in Python. Prior to 1.4.2, on Windows, TemplateLookup.get_template() in mako/lookup.py resolves template URIs with posixpath, while Template.__init__() in mako/template.py validates them with os.path, which uses ntpath. A URI beginning with a drive designator causes ntpath to absorb the traversal segments before the leading dot-dot check, while posixpath resolution can escape the configured template directory. An application that passes attacker-controlled template names or include paths can disclose process-readable files on the same volume, and a targeted file containing Mako template syntax may also be parsed and executed as a template. Raw URL paths are generally normalized before reaching this form, but query strings, form or JSON bodies, route parameters, and dynamic include expressions can preserve it. This issue is fixed in version 1.4.2.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-30 19:54 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/sqlalchemy/mako/security/advis…	x_refsource_CONFIRM
https://github.com/sqlalchemy/mako/issues/441	x_refsource_MISC
https://github.com/sqlalchemy/mako/commit/000ed85…	x_refsource_MISC
https://github.com/sqlalchemy/mako/releases/tag/r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sqlalchemy	mako	Affected: < 1.4.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-102991",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-30T19:54:27.628844Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-30T19:54:41.077Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-5639-2j2p-m4mx"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mako",
          "vendor": "sqlalchemy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mako is a template library written in Python. Prior to 1.4.2, on Windows, TemplateLookup.get_template() in mako/lookup.py resolves template URIs with posixpath, while Template.__init__() in mako/template.py validates them with os.path, which uses ntpath. A URI beginning with a drive designator causes ntpath to absorb the traversal segments before the leading dot-dot check, while posixpath resolution can escape the configured template directory. An application that passes attacker-controlled template names or include paths can disclose process-readable files on the same volume, and a targeted file containing Mako template syntax may also be parsed and executed as a template. Raw URL paths are generally normalized before reaching this form, but query strings, form or JSON bodies, route parameters, and dynamic include expressions can preserve it. This issue is fixed in version 1.4.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-30T19:47:07.128Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-5639-2j2p-m4mx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-5639-2j2p-m4mx"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/issues/441",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/issues/441"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/commit/000ed85e4e48771eff460bf4fc721fb43de80e08",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/commit/000ed85e4e48771eff460bf4fc721fb43de80e08"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_4_2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_4_2"
        }
      ],
      "source": {
        "advisory": "GHSA-5639-2j2p-m4mx",
        "discovery": "UNKNOWN"
      },
      "title": "Mako: Path traversal via drive-letter URI on Windows in TemplateLookup"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-102991",
    "datePublished": "2026-09-30T19:47:07.128Z",
    "dateReserved": "2026-09-29T20:46:08.334Z",
    "dateUpdated": "2026-09-30T19:54:41.077Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-44307 (GCVE-0-2026-44307)

Vulnerability from cvelistv5 – Published: 2026-05-12 21:53 – Updated: 2026-05-13 15:00

Title

Mako: Path traversal via backslash URI on Windows in TemplateLookup

Summary

Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \..\..\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-13 14:57 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/sqlalchemy/mako/security/advis…	x_refsource_CONFIRM
https://github.com/sqlalchemy/mako/issues/435	x_refsource_MISC
https://github.com/sqlalchemy/mako/commit/72e10c5…	x_refsource_MISC
https://github.com/sqlalchemy/mako/releases/tag/r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sqlalchemy	mako	Affected: < 1.3.12

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44307",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-13T14:57:34.308791Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-13T15:00:13.642Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mako",
          "vendor": "sqlalchemy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \\..\\..\\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-12T21:53:52.826Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/issues/435",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/issues/435"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12"
        }
      ],
      "source": {
        "advisory": "GHSA-2h4p-vjrc-8xpq",
        "discovery": "UNKNOWN"
      },
      "title": "Mako: Path traversal via backslash URI on Windows in TemplateLookup"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44307",
    "datePublished": "2026-05-12T21:53:52.826Z",
    "dateReserved": "2026-05-05T19:00:06.021Z",
    "dateUpdated": "2026-05-13T15:00:13.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-41205 (GCVE-0-2026-41205)

Vulnerability from cvelistv5 – Published: 2026-04-23 18:52 – Updated: 2026-05-20 01:32

Title

Mako: Path traversal via double-slash URI prefix in TemplateLookup

Summary

Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.get_template() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.get_template(). This vulnerability is fixed in 1.3.11.

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-23 20:20 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/sqlalchemy/mako/security/advis…	x_refsource_CONFIRM
https://github.com/sqlalchemy/mako/commit/e05ac61…	x_refsource_MISC
https://github.com/sqlalchemy/mako/releases/tag/r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sqlalchemy	mako	Affected: < 1.3.11

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41205",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T20:20:51.233790Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-23T20:20:59.107Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mako",
          "vendor": "sqlalchemy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.get_template() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.get_template(). This vulnerability is fixed in 1.3.11."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-20T01:32:18.382Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-v92g-xgxw-vvmm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-v92g-xgxw-vvmm"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/commit/e05ac61989a7fb9dd7dcde6cfd72dc48328719a3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/commit/e05ac61989a7fb9dd7dcde6cfd72dc48328719a3"
        },
        {
          "name": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_11"
        }
      ],
      "source": {
        "advisory": "GHSA-v92g-xgxw-vvmm",
        "discovery": "UNKNOWN"
      },
      "title": "Mako: Path traversal via double-slash URI prefix in TemplateLookup"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-41205",
    "datePublished": "2026-04-23T18:52:24.194Z",
    "dateReserved": "2026-04-18T02:51:52.974Z",
    "dateUpdated": "2026-05-20T01:32:18.382Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2022-40023 (GCVE-0-2022-40023)

Vulnerability from cvelistv5 – Published: 2022-09-07 00:00 – Updated: 2025-12-03 06:05

Summary

Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin.

Severity

No CVSS data available.

CWE

n/a

Assigner

mitre mitre root Scorecard

References

7 references

URL	Tags
https://github.com/sqlalchemy/mako/issues/366
https://github.com/sqlalchemy/mako/commit/9257602…
https://github.com/sqlalchemy/mako/blob/c2f392e0b…
https://pyup.io/vulnerabilities/CVE-2022-40023/50870/
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://pyup.io/posts/pyup-discovers-redos-vulner…
https://lists.debian.org/debian-lts-announce/2025…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-12-03T06:05:04.544Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/sqlalchemy/mako/issues/366"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pyup.io/vulnerabilities/CVE-2022-40023/50870/"
          },
          {
            "name": "[debian-lts-announce] 20220921 [SECURITY] [DLA 3116-1] mako security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/12/msg00004.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-27T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/sqlalchemy/mako/issues/366"
        },
        {
          "url": "https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c"
        },
        {
          "url": "https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21"
        },
        {
          "url": "https://pyup.io/vulnerabilities/CVE-2022-40023/50870/"
        },
        {
          "name": "[debian-lts-announce] 20220921 [SECURITY] [DLA 3116-1] mako security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html"
        },
        {
          "url": "https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2022-40023",
    "datePublished": "2022-09-07T00:00:00.000Z",
    "dateReserved": "2022-09-06T00:00:00.000Z",
    "dateUpdated": "2025-12-03T06:05:04.544Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Find a vulnerability

Search criteria

8 vulnerabilities found for mako by sqlalchemy

CVE-2026-102991 (GCVE-0-2026-102991)

CVE-2026-44307 (GCVE-0-2026-44307)

CVE-2026-41205 (GCVE-0-2026-41205)

CVE-2022-40023 (GCVE-0-2022-40023)

CVE-2026-102991 (GCVE-0-2026-102991)

CVE-2026-44307 (GCVE-0-2026-44307)

CVE-2026-41205 (GCVE-0-2026-41205)

CVE-2022-40023 (GCVE-0-2022-40023)