CVE-2026-14673 (GCVE-0-2026-14673)

Vulnerability from cvelistv5 – Published: 2026-08-13 13:00 – Updated: 2026-08-29 23:07
VLAI
Title
PostgreSQL amcheck does not clear untrusted search path
Summary
Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privilege to execute arbitrary functions as the owners of expression indexes that depend on the search path, via setting a hostile search path before calling the amcheck function. Within major versions 18, 16, 15, and 14, minor versions before PostgreSQL 18.6, 16.15, 15.19, and 14.24 are affected. PostgreSQL 17 is unaffected.
Severity
3.8 (Low)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 14:42 UTC
CWE
Assigner
PostgreSQL CNA under the redhat root
CNA scorecard C 67/100 over 88 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
n/a PostgreSQL Affected: 18 , < 18.6 (rpm)
Affected: 16 , < 16.15 (rpm)
Affected: 15 , < 15.19 (rpm)
Affected: 0 , < 14.24 (rpm)
Credits
The PostgreSQL project thanks 王跃林 and Jacob Brazeal for reporting this problem.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-14673",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:42:48.455030Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T15:36:12.454Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "PostgreSQL",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "18.6",
              "status": "affected",
              "version": "18",
              "versionType": "rpm"
            },
            {
              "lessThan": "16.15",
              "status": "affected",
              "version": "16",
              "versionType": "rpm"
            },
            {
              "lessThan": "15.19",
              "status": "affected",
              "version": "15",
              "versionType": "rpm"
            },
            {
              "lessThan": "14.24",
              "status": "affected",
              "version": "0",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Superuser previously issued \"CREATE EXTENSION amcheck\" and granted the attacker EXECUTE privilege on an extension function."
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "The PostgreSQL project thanks \u738b\u8dc3\u6797 and Jacob Brazeal for reporting this problem."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privilege to execute arbitrary functions as the owners of expression indexes that depend on the search path, via setting a hostile search path before calling the amcheck function.  Within major versions 18, 16, 15, and 14, minor versions before PostgreSQL 18.6, 16.15, 15.19, and 14.24 are affected.  PostgreSQL 17 is unaffected."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 3.8,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-426",
              "description": "Untrusted Search Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-29T23:07:18.622Z",
        "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "shortName": "PostgreSQL"
      },
      "references": [
        {
          "url": "https://www.postgresql.org/support/security/CVE-2026-14673/"
        }
      ],
      "title": "PostgreSQL amcheck does not clear untrusted search path",
      "x_postgresql": {
        "component": "contrib module"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "assignerShortName": "PostgreSQL",
    "cveId": "CVE-2026-14673",
    "datePublished": "2026-08-13T13:00:06.799Z",
    "dateReserved": "2026-07-03T20:28:14.306Z",
    "dateUpdated": "2026-08-29T23:07:18.622Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-14673",
      "date": "2026-10-19",
      "epss": "0.00174",
      "percentile": "0.065"
    },
    "microsoft_vex": {
      "current_release_date": "2026-08-23T14:59:57.000Z",
      "cve": "CVE-2026-14673",
      "id": "msrc_CVE-2026-14673",
      "initial_release_date": "2026-08-14T19:15:47.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "PostgreSQL amcheck does not clear untrusted search path",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-14673.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "PostgreSQL",
                "vendor": "n/a",
                "versions": [
                  {
                    "lessThan": "18.6",
                    "status": "affected",
                    "version": "18",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "16.15",
                    "status": "affected",
                    "version": "16",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "15.19",
                    "status": "affected",
                    "version": "15",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "14.24",
                    "status": "affected",
                    "version": "0",
                    "versionType": "rpm"
                  }
                ]
              }
            ],
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6BEE5714-C2EF-48DC-8613-C3EAA149E12E",
                    "versionEndExcluding": "14.24",
                    "versionStartIncluding": "14.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F433746A-733F-4ED0-9913-8AF69E0C8BF2",
                    "versionEndExcluding": "15.19",
                    "versionStartIncluding": "15.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1996B91F-E0B2-4A78-8788-E17EA68D179C",
                    "versionEndExcluding": "16.15",
                    "versionStartIncluding": "16.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8494F67B-673A-4E1F-8F40-D24DCC1F8DA4",
                    "versionEndExcluding": "18.5",
                    "versionStartIncluding": "18.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privilege to execute arbitrary functions as the owners of expression indexes that depend on the search path, via setting a hostile search path before calling the amcheck function.  Within major versions 18, 16, 15, and 14, minor versions before PostgreSQL 18.6, 16.15, 15.19, and 14.24 are affected.  PostgreSQL 17 is unaffected."
          }
        ],
        "id": "CVE-2026-14673",
        "lastModified": "2026-08-29T23:17:14.993",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 3.8,
                "baseSeverity": "LOW",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.2,
              "impactScore": 2.5,
              "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-14673",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:42:48.455030Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-13T13:17:44.783",
        "references": [
          {
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.postgresql.org/support/security/CVE-2026-14673/"
          }
        ],
        "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-426"
              }
            ],
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-09-03T15:23:15+00:00",
      "cve": "CVE-2026-14673",
      "id": "CVE-2026-14673",
      "initial_release_date": "2026-08-13T13:00:06.799000+00:00",
      "product_status:fixed": "8",
      "product_status:known_affected": "162",
      "product_status:known_not_affected": "24",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "postgresql: PostgreSQL amcheck: Privilege escalation via untrusted search path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-14673.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-14673",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-13T14:42:48.455030Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-13T15:36:06.324Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "PostgreSQL",
              "vendor": "n/a",
              "versions": [
                {
                  "lessThan": "18.6",
                  "status": "affected",
                  "version": "18",
                  "versionType": "rpm"
                },
                {
                  "lessThan": "16.15",
                  "status": "affected",
                  "version": "16",
                  "versionType": "rpm"
                },
                {
                  "lessThan": "15.19",
                  "status": "affected",
                  "version": "15",
                  "versionType": "rpm"
                },
                {
                  "lessThan": "14.24",
                  "status": "affected",
                  "version": "0",
                  "versionType": "rpm"
                }
              ]
            }
          ],
          "configurations": [
            {
              "lang": "en",
              "value": "Superuser previously issued \"CREATE EXTENSION amcheck\" and granted the attacker EXECUTE privilege on an extension function."
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "The PostgreSQL project thanks \u738b\u8dc3\u6797 and Jacob Brazeal for reporting this problem."
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privilege to execute arbitrary functions as the owners of expression indexes that depend on the search path, via setting a hostile search path before calling the amcheck function.  Within major versions 18, 16, 15, and 14, minor versions before PostgreSQL 18.6, 16.15, 15.19, and 14.24 are affected.  PostgreSQL 17 is unaffected."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 3.8,
                "baseSeverity": "LOW",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-426",
                  "description": "Untrusted Search Path",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-29T23:07:18.622Z",
            "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "shortName": "PostgreSQL"
          },
          "references": [
            {
              "url": "https://www.postgresql.org/support/security/CVE-2026-14673/"
            }
          ],
          "title": "PostgreSQL amcheck does not clear untrusted search path",
          "x_postgresql": {
            "component": "contrib module"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "assignerShortName": "PostgreSQL",
        "cveId": "CVE-2026-14673",
        "datePublished": "2026-08-13T13:00:06.799Z",
        "dateReserved": "2026-07-03T20:28:14.306Z",
        "dateUpdated": "2026-08-29T23:07:18.622Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.