Distribution advisory
This page covers CVE-2026-2006 as tracked by Debian, for the package postgresql-13. The fix is available in version 13.23-0+deb11u2; 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
DEBIAN-CVE-2026-2006 is classified as CWE-129: Improper Validation of Array Index. An index derived from input is used without a range check, so the access lands outside the array.
Affected software
DEBIAN-CVE-2026-2006 is recorded against 4 packages.
- postgresql-13 (fixed in 13.23-0+deb11u2)
- postgresql-15 (fixed in 15.16-0+deb12u1)
- postgresql-17 (fixed in 17.8-0+deb13u1)
- postgresql-18 (fixed in 18.2-1)
Timeline and source
Published on 12 February 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
security-tracker.debian.org (Advisory)
Same weakness in other software
These advisories are the same class of weakness (CWE-129: Improper Validation of Array Index) in other software:
