Vulnerability-Lookup

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

Vulnerability from cvelistv5 – Published: 2026-08-23 19:53 – Updated: 2026-08-23 23:04

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

No CVSS data available.

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

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-08-23T23:04:55.125Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/08/23/5"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-23T19:53:18.185Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/bucardo/dbdpg/security/advisories/GHSA-785p-fw3v-r822"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/TURNSTEP/DBD-Pg-3.21.1/source/Changes"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/bucardo/dbdpg/commit/6d6f47ed2403cda55c82b1bad56e388ba7390065.patch"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://github.com/bucardo/dbdpg/commit/adacf1de872326a465e13f9e4281a674ebcd227e"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to version 3.21.1 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-78183",
    "datePublished": "2026-08-23T19:53:18.185Z",
    "dateReserved": "2026-08-23T16:38:31.813Z",
    "dateUpdated": "2026-08-23T23:04:55.125Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-78183",
      "date": "2026-08-24",
      "epss": "0.00229",
      "percentile": "0.1351"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-78183\",\"sourceIdentifier\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"published\":\"2026-08-23T20:16:50.550\",\"lastModified\":\"2026-08-23T23:16:46.437\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"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.\"}],\"affected\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"affectedData\":[{\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://cpan.org/modules\",\"packageName\":\"DBD-Pg\",\"modules\":[\"DBD::Pg\"],\"programFiles\":[\"quote.c\"],\"programRoutines\":[{\"name\":\"quote_float\"}],\"repo\":\"https://github.com/bucardo/dbdpg\",\"packageURL\":\"pkg:cpan/DBD-Pg\",\"versions\":[{\"version\":\"3.21.0\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{},\"weaknesses\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"references\":[{\"url\":\"https://github.com/bucardo/dbdpg/commit/6d6f47ed2403cda55c82b1bad56e388ba7390065.patch\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"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\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/08/23/5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}

FKIE_CVE-2026-78183

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

Severity

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"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "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": "2026-08-23T23:16:46.437",
  "metrics": {},
  "published": "2026-08-23T20:16:50.550",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/bucardo/dbdpg/commit/6d6f47ed2403cda55c82b1bad56e388ba7390065.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "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": "Received",
  "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: 2026-08-24 00:33

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.

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": null
  },
  "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": "2026-08-24T00:33:10Z",
  "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": []
}

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.

Action not permitted

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

FKIE_CVE-2026-78183

GHSA-6MQ2-JF7V-PVJX

Tags

Sightings

Nomenclature