Vulnerability-Lookup

CVE-2026-78183 (GCVE-0-2026-78183)

Vulnerability from cvelistv5 – Published: 2026-08-23 19:53 – Updated: 2026-08-25 19:32

Title

DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float

Summary

DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float. quote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL. But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL. This can be reached by the $dbh->quote method, for example $dbh->quote( "Infinity", DBI::SQL_NUMERIC ). This regression was introduced in 3.21.0 by the quote.c rewrite.

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 19:32 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

CPANSec redhat root

References

5 references

URL	Tags
https://github.com/bucardo/dbdpg/security/advisor…	vendor-advisory
https://metacpan.org/release/TURNSTEP/DBD-Pg-3.21…	release-notes
https://github.com/bucardo/dbdpg/commit/6d6f47ed2…	patch
https://github.com/bucardo/dbdpg/commit/adacf1de8…	related
http://www.openwall.com/lists/oss-security/2026/08/23/5

Impacted products

1 product

Vendor	Product	Version	CPE status
		Affected: 3.21.0 (custom)

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2026-08-23T23:04:55.125Z",
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        "metrics": [
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              "attackComplexity": "LOW",
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                "options": [
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        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
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              "type": "CWE"
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        {
          "lang": "en",
          "value": "Upgrade to version 3.21.1 or later."
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      "source": {
        "discovery": "UNKNOWN"
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FKIE_CVE-2026-78183

Vulnerability from fkie_nvd - Published: 2026-08-23 20:16 - Updated: 2026-08-26 16:51

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/bucardo/dbdpg/commit/6d6f47ed2403cda55c82b1bad56e388ba7390065.patch
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/bucardo/dbdpg/commit/adacf1de872326a465e13f9e4281a674ebcd227e
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/bucardo/dbdpg/security/advisories/GHSA-785p-fw3v-r822
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/TURNSTEP/DBD-Pg-3.21.1/source/Changes
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/08/23/5

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "DBD::Pg"
          ],
          "packageName": "DBD-Pg",
          "packageURL": "pkg:cpan/DBD-Pg",
          "programFiles": [
            "quote.c"
          ],
          "programRoutines": [
            {
              "name": "quote_float"
            }
          ],
          "repo": "https://github.com/bucardo/dbdpg",
          "versions": [
            {
              "status": "affected",
              "version": "3.21.0",
              "versionType": "custom"
            }
          ]
        }
      ],
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    }
  ],
  "cveTags": [],
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      "lang": "en",
      "value": "DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float.\n\nquote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL.  But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL.\n\nThis can be reached by the $dbh-\u003equote method, for example\n\n    $dbh-\u003equote( \"Infinity\", DBI::SQL_NUMERIC ).\n\nThis regression was introduced in 3.21.0 by the quote.c rewrite."
    }
  ],
  "id": "CVE-2026-78183",
  "lastModified": "2026-08-26T16:51:19.490",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        "impactScore": 5.9,
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        "type": "Secondary"
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    ],
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          "timestamp": "2026-08-25T19:32:23.591734Z",
          "version": "2.0.3"
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    },
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      "url": "https://github.com/bucardo/dbdpg/commit/adacf1de872326a465e13f9e4281a674ebcd227e"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/bucardo/dbdpg/security/advisories/GHSA-785p-fw3v-r822"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/TURNSTEP/DBD-Pg-3.21.1/source/Changes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/23/5"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-6MQ2-JF7V-PVJX

Vulnerability from github – Published: 2026-08-23 21:31 – Updated: 2026-08-25 21:31

Details

DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float.

quote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL. But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL.

This can be reached by the $dbh->quote method, for example

$dbh->quote( "Infinity", DBI::SQL_NUMERIC ).

This regression was introduced in 3.21.0 by the quote.c rewrite.

Severity

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-78183"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-23T20:16:50Z",
    "severity": "CRITICAL"
  },
  "details": "DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float.\n\nquote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL.  But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL.\n\nThis can be reached by the $dbh-\u003equote method, for example\n\n    $dbh-\u003equote( \"Infinity\", DBI::SQL_NUMERIC ).\n\nThis regression was introduced in 3.21.0 by the quote.c rewrite.",
  "id": "GHSA-6mq2-jf7v-pvjx",
  "modified": "2026-08-25T21:31:21Z",
  "published": "2026-08-23T21:31:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bucardo/dbdpg/security/advisories/GHSA-785p-fw3v-r822"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78183"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bucardo/dbdpg/commit/6d6f47ed2403cda55c82b1bad56e388ba7390065.patch"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bucardo/dbdpg/commit/adacf1de872326a465e13f9e4281a674ebcd227e"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/TURNSTEP/DBD-Pg-3.21.1/source/Changes"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/23/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

OPENSUSE-SU-2026:11722-1

Vulnerability from csaf_opensuse - Published: 2026-09-08 00:00 - Updated: 2026-09-16 20:27

Summary

perl-DBD-Pg-3.21.2-1.1 on GA media

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-78183.

CVE-2026-78183

7.5 (High)


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

Recommended: 4 products

Open the full advisory

ubuntu-cve-2026-78183

Vulnerability from osv_ubuntu

Published

2026-08-23 20:16

Modified

2026-09-02 16:27

Summary

Details

Severity

9.8 (Critical)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-78183	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-78183	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT
	https://github.com/bucardo/dbdpg/security/advisor…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbd-pg-perl",
            "binary_version": "3.5.3-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libdbd-pg-perl",
        "purl": "pkg:deb/ubuntu/libdbd-pg-perl@3.5.3-1build1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.1-1",
        "3.5.3-1",
        "3.5.3-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbd-pg-perl",
            "binary_version": "3.7.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libdbd-pg-perl",
        "purl": "pkg:deb/ubuntu/libdbd-pg-perl@3.7.0-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.2-2build1",
        "3.7.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbd-pg-perl",
            "binary_version": "3.10.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libdbd-pg-perl",
        "purl": "pkg:deb/ubuntu/libdbd-pg-perl@3.10.4-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.9.1-1",
        "3.9.1-1build1",
        "3.10.0-2",
        "3.10.3-1",
        "3.10.4-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbd-pg-perl",
            "binary_version": "3.15.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libdbd-pg-perl",
        "purl": "pkg:deb/ubuntu/libdbd-pg-perl@3.15.1-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.14.2-1build1",
        "3.15.0-2",
        "3.15.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbd-pg-perl",
            "binary_version": "3.18.0-1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libdbd-pg-perl",
        "purl": "pkg:deb/ubuntu/libdbd-pg-perl@3.18.0-1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.16.3-1",
        "3.17.0-1",
        "3.18.0-1",
        "3.18.0-1build1",
        "3.18.0-1build2",
        "3.18.0-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbd-pg-perl",
            "binary_version": "3.18.0-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libdbd-pg-perl",
        "purl": "pkg:deb/ubuntu/libdbd-pg-perl@3.18.0-4?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.18.0-2",
        "3.18.0-4"
      ]
    }
  ],
  "aliases": [],
  "details": "DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float. quote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL.  But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL. This can be reached by the $dbh-\u003equote method, for example     $dbh-\u003equote( \"Infinity\", DBI::SQL_NUMERIC ). This regression was introduced in 3.21.0 by the quote.c rewrite.",
  "id": "UBUNTU-CVE-2026-78183",
  "modified": "2026-09-02T16:27:47Z",
  "published": "2026-08-23T20:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-78183"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-78183"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/42931839/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/bucardo/dbdpg/security/advisories/GHSA-785p-fw3v-r822"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-78183"
  ]
}

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.

Detection rules are retrieved from Rulezet.

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

CVE-2026-78183 (GCVE-0-2026-78183)

FKIE_CVE-2026-78183

GHSA-6MQ2-JF7V-PVJX

OPENSUSE-SU-2026:11722-1

ubuntu-cve-2026-78183

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour