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🛡️ CVE-2026-6473 on Ubuntu — postgresql-10

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Distribution advisory

This page covers CVE-2026-6473 as tracked by Ubuntu, for the package postgresql-10. The fix is available in version 14.23-0ubuntu0.22.04.1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

UBUNTU-CVE-2026-6473 is classified as CWE-190: Integer Overflow or Wraparound. Arithmetic produces a value too large for its type and wraps around, so a later size or bounds check passes when it should not.

Affected software

UBUNTU-CVE-2026-6473 is recorded against 8 packages.

  • postgresql-10
  • postgresql-12
  • postgresql-14 (fixed in 14.23-0ubuntu0.22.04.1)
  • postgresql-16 (fixed in 16.14-0ubuntu0.24.04.1)
  • postgresql-17 (fixed in 17.10-0ubuntu0.25.10.1)
  • postgresql-18 (fixed in 18.4-0ubuntu0.26.04.1)
  • postgresql-9.3
  • postgresql-9.5

Timeline and source

Published on 14 May 2026 and last revised on 30 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
www.postgresql.org (Report)
www.postgresql.org (Report)
ubuntu.com (Advisory)

Other advisories for this package

postgresql-10 has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-190: Integer Overflow or Wraparound) in other software:

CVE-2026-6473 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-05-14
Updated 2026-08-20
Modified 2026-06-30
Fix URL N/A

Affected Packages

Software From version Fixed in
postgresql-10 — —
postgresql-12 — —
postgresql-14 — 14.23-0ubuntu0.22.04.1
postgresql-16 — 16.14-0ubuntu0.24.04.1
postgresql-17 — 17.10-0ubuntu0.25.10.1
postgresql-18 — 18.4-0ubuntu0.26.04.1
postgresql-9.3 — —
postgresql-9.5 — —

Site Security Check

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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