4.3

CVE-2026-2003: PostgreSQL oidvector discloses a few bytes of memory

Analyzed
AliasesALPINE-CVE-2026-2003UBUNTU-CVE-2026-2003DEBIAN-CVE-2026-2003
Published 12-02-2026Last modified 12-02-2026

Vulnerability summary

CVE-2026-2003 is a medium (CVSS 4.3) vulnerability in postgresql. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.32%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 48 · Related 31
DSA-6132-1DSA-6133-1MGASA-2026-0041OPENSUSE-SU-2026:10190-1OPENSUSE-SU-2026:10191-1OPENSUSE-SU-2026:10192-1

Timeline

  1. 12-02-2026
    PublishedVulnerability first disclosed.
  2. 12-02-2026
    Last modifiedVulnerability information updated.

Description

Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.30% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu7 products
  • postgresql-10All versions (No fix recorded)
  • postgresql-12All versions (No fix recorded)
  • postgresql-14< 14.22-0ubuntu0.22.04.1
  • postgresql-16< 16.13-0ubuntu0.24.04.1
  • postgresql-17< 17.9-0ubuntu0.25.10.1
Alpine4 products
  • postgresql15< 15.16-r0
  • postgresql16< 16.12-r0
  • postgresql17< 17.8-r0
  • postgresql18< 18.2-r0
Debian3 products
  • postgresql-15< 15.16-0+deb12u1
  • postgresql-17< 17.8-0+deb13u1
  • postgresql-18< 18.2-1
Chainguard1 product
  • postgresql-13< 13.23-r5
Postgresql1 product
  • postgresql≥ 14.0, < 14.21 | ≥ 15.0, < 15.16 | ≥ 16.0, < 16.12 | ≥ 17.0, < 17.8 | ≥ 18.0, < 18.2
Wolfi1 product
  • postgresql-13< 13.23-r5

6 vendors · 17 products

References

8 links