Vulnerability-Lookup

ubuntu-cve-2026-73194

Vulnerability from osv_ubuntu

Published

2026-08-15 13:17

Modified

2026-08-19 11:11

Summary

Details

DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse. preparse reserves seven output bytes per input byte, the width of the longest ':p99999' expansion. The ':N' branch parses the number with atoi(src) and assigns it to the binder counter with no range check, so a statement containing ':2147483648' leaves the counter negative (-2147483648 with glibc, where atoi wraps). Each following '?' then expands through sprintf(start, ":p%d", idx++) to ':p-2147483648', 14 bytes with the terminating NUL where the buffer budgets 7. The placeholder limit added in 1.650 tests the counter against 99,999, which a negative counter passes. Any caller that preparses an untrusted statement into ':pN' style placeholders gets a heap out-of-bounds write that grows with the number of '?' marks following the poisoned placeholder. The '?' and '%s' return styles compare the parsed number against the expected sequence and error out, and are unaffected.

Severity

9.1 (Critical)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-73194	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-73194	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT
	https://github.com/perl5-dbi/dbi/commit/29b72ae7d…	REPORT
	https://github.com/perl5-dbi/dbi/security/advisor…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-10879	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-14739	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.630-1ubuntu0.1~esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.630-1ubuntu0.1~esm6?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.627-1",
        "1.628-1",
        "1.630-1",
        "1.630-1ubuntu0.1~esm1",
        "1.630-1ubuntu0.1~esm4",
        "1.630-1ubuntu0.1~esm5",
        "1.630-1ubuntu0.1~esm6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.634-1ubuntu0.2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.634-1ubuntu0.2+esm2?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.633-1",
        "1.634-1",
        "1.634-1build1",
        "1.634-1ubuntu0.1",
        "1.634-1ubuntu0.2",
        "1.634-1ubuntu0.2+esm1",
        "1.634-1ubuntu0.2+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.640-1ubuntu0.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.640-1ubuntu0.3+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.637-1",
        "1.639-1",
        "1.640-1",
        "1.640-1ubuntu0.1",
        "1.640-1ubuntu0.2",
        "1.640-1ubuntu0.3",
        "1.640-1ubuntu0.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.643-1ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.643-1ubuntu0.1+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.642-1",
        "1.642-1build1",
        "1.643-1",
        "1.643-1ubuntu0.1",
        "1.643-1ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.643-3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.643-3ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.643-3build2",
        "1.643-3build3",
        "1.643-3ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.643-4ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.643-4ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.643-4",
        "1.643-4build1",
        "1.643-4build2",
        "1.643-4build3",
        "1.643-4ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.647-1ubuntu0.26.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.647-1ubuntu0.26.04.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.647-1",
        "1.647-1build1",
        "1.647-1ubuntu0.26.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse. preparse reserves seven output bytes per input byte, the width of the longest \u0027:p99999\u0027 expansion. The \u0027:N\u0027 branch parses the number with `atoi(src)` and assigns it to the binder counter with no range check, so a statement containing \u0027:2147483648\u0027 leaves the counter negative (-2147483648 with glibc, where atoi wraps). Each following \u0027?\u0027 then expands through `sprintf(start, \":p%d\", idx++)` to \u0027:p-2147483648\u0027, 14 bytes with the terminating NUL where the buffer budgets 7. The placeholder limit added in 1.650 tests the counter against 99,999, which a negative counter passes. Any caller that preparses an untrusted statement into \u0027:pN\u0027 style placeholders gets a heap out-of-bounds write that grows with the number of \u0027?\u0027 marks following the poisoned placeholder. The \u0027?\u0027 and \u0027%s\u0027 return styles compare the parsed number against the expected sequence and error out, and are unaffected.",
  "id": "UBUNTU-CVE-2026-73194",
  "modified": "2026-08-19T11:11:14Z",
  "published": "2026-08-15T13:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-73194"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-73194"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/42707363/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/perl5-dbi/dbi/commit/29b72ae7d2a8114a734a55840bf1c45b89207809.patch"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/perl5-dbi/dbi/security/advisories/GHSA-623j-hfpc-mrc4"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-10879"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-14739"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-73194"
  ]
}

CVE-2026-73194 (GCVE-0-2026-73194)

Vulnerability from cvelistv5 – Published: 2026-08-15 12:09 – Updated: 2026-08-17 20:29

Title

DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse

Summary

DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse. preparse reserves seven output bytes per input byte, the width of the longest ':p99999' expansion. The ':N' branch parses the number with `atoi(src)` and assigns it to the binder counter with no range check, so a statement containing ':2147483648' leaves the counter negative (-2147483648 with glibc, where atoi wraps). Each following '?' then expands through `sprintf(start, ":p%d", idx++)` to ':p-2147483648', 14 bytes with the terminating NUL where the buffer budgets 7. The placeholder limit added in 1.650 tests the counter against 99,999, which a negative counter passes. Any caller that preparses an untrusted statement into ':pN' style placeholders gets a heap out-of-bounds write that grows with the number of '?' marks following the poisoned placeholder. The '?' and '%s' return styles compare the parsed number against the expected sequence and error out, and are unaffected.

Severity

9.1 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 20:29 UTC

CWE

CWE-1284 - Improper Validation of Specified Quantity in Input
CWE-787 - Out-of-bounds Write

Assigner

CPANSec redhat root

References

4 references

URL	Tags
https://github.com/perl5-dbi/dbi/security/advisor…	vendor-advisory
https://github.com/perl5-dbi/dbi/commit/29b72ae7d…	patch
https://www.cve.org/CVERecord?id=CVE-2026-14739	related
https://www.cve.org/CVERecord?id=CVE-2026-10879	related

Impacted products

1 product

Vendor	Product	Version
		Affected: 0 , < 1.652 (custom)

Credits

Harsh Raj Singhania

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-73194",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-17T20:29:15.870047Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-17T20:29:56.764Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "DBI"
          ],
          "packageName": "DBI",
          "packageURL": "pkg:cpan/DBI",
          "programFiles": [
            "DBI.xs"
          ],
          "programRoutines": [
            {
              "name": "preparse"
            }
          ],
          "repo": "https://github.com/perl5-dbi/dbi",
          "versions": [
            {
              "lessThan": "1.652",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Harsh Raj Singhania"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse.\n\npreparse reserves seven output bytes per input byte, the width of the longest \u0027:p99999\u0027 expansion. The \u0027:N\u0027 branch parses the number with `atoi(src)` and assigns it to the binder counter with no range check, so a statement containing \u0027:2147483648\u0027 leaves the counter negative (-2147483648 with glibc, where atoi wraps). Each following \u0027?\u0027 then expands through `sprintf(start, \":p%d\", idx++)` to \u0027:p-2147483648\u0027, 14 bytes with the terminating NUL where the buffer budgets 7. The placeholder limit added in 1.650 tests the counter against 99,999, which a negative counter passes.\n\nAny caller that preparses an untrusted statement into \u0027:pN\u0027 style placeholders gets a heap out-of-bounds write that grows with the number of \u0027?\u0027 marks following the poisoned placeholder. The \u0027?\u0027 and \u0027%s\u0027 return styles compare the parsed number against the expected sequence and error out, and are unaffected."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1284",
              "description": "CWE-1284 Improper Validation of Specified Quantity in Input",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-15T12:09:22.962Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/perl5-dbi/dbi/security/advisories/GHSA-623j-hfpc-mrc4"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/perl5-dbi/dbi/commit/29b72ae7d2a8114a734a55840bf1c45b89207809.patch"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-14739"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-10879"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to DBI 1.652 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse",
      "workarounds": [
        {
          "lang": "en",
          "value": "For deployments that cannot be upgraded, limit SQL statements to 99,999 placeholders."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-73194",
    "datePublished": "2026-08-15T12:09:22.962Z",
    "dateReserved": "2026-08-11T11:58:19.137Z",
    "dateUpdated": "2026-08-17T20:29:56.764Z",
    "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.

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.