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CVE-2026-2005

PostgreSQL pgcrypto heap buffer overflow executes arbitrary code

Description

Heap buffer overflow in PostgreSQL pgcrypto allows a ciphertext provider to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

Timeline

  1. ID reserved

    By PostgreSQL

  2. · 7 days later

    Published

  3. · 5 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-2005, by who scored it
Scored byCVSSScoreVector
PostgreSQLCNA (assigner)3.1High8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
redhat-SADPADP (enrichment)3.1High8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1High8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
1.4% · top 28% of all CVEs (10 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Affected products

  • PostgreSQL

    • affected 18 – < 18.2
    • affected 17 – < 17.8
    • affected 16 – < 16.12
    • affected 15 – < 15.16
    • affected < 14.21

References

34

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .