Vulnerability-Lookup

OESA-2023-1683 (CVE-2022-40023)

Vulnerability from osv_openeuler – Published: 2023-09-28 11:06 – Updated: 2026-08-06 11:06 – Source website

Summary

python-mako security update

Details

Python-mako is a template library for Python. It provides a familiar, non-XML syntax which compiles into Python modules for maximum performance. Mako's syntax and API borrows from the best ideas of many others, including Django templates, Cheetah, Myghty, and Genshi.

Security Fix(es):

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.(CVE-2022-40023)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-40023	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "noarch": [
          "python3-mako-1.0.6-14.oe1.noarch.rpm",
          "python-mako-help-1.0.6-14.oe1.noarch.rpm",
          "python2-mako-1.0.6-14.oe1.noarch.rpm"
        ],
        "src": [
          "python-mako-1.0.6-14.oe1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "python-mako",
        "purl": "pkg:rpm/openEuler/python-mako\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.6-14.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Python-mako is a template library for Python. It provides a familiar, non-XML syntax which compiles into Python modules for maximum performance. Mako\u0026apos;s syntax and API borrows from the best ideas of many others, including Django templates, Cheetah, Myghty, and Genshi.\r\n\r\nSecurity Fix(es):\r\n\r\nSqlalchemy 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.(CVE-2022-40023)",
  "id": "OESA-2023-1683",
  "modified": "2026-08-06T11:06:08Z",
  "published": "2023-09-28T11:06:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1683"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-40023"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "python-mako security update",
  "upstream": [
    "CVE-2022-40023"
  ]
}

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

Assigner

mitre mitre root

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"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2023-1683 (CVE-2022-40023)

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

Tags

Sightings

Nomenclature

Related by attack behaviour