Distribution advisory
This page covers CVE-2026-6475 as tracked by BellSoft, for the package postgresql15. The fix is available in version 15.18-r0; 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 no privileges on the target. A user must be tricked into taking some action. 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:N/UI:R/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: None — an unauthenticated stranger can try it.
- User interaction: Required — someone has to click, open or visit something.
- 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
BELL-CVE-2026-6475 is classified as CWE-61: UNIX Symbolic Link (Symlink) Following. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere.
Affected software
BELL-CVE-2026-6475 is recorded against 3 packages.
- postgresql15 (from 15.2-r0 up to 15.18-r0)
- postgresql17 (from 17.5-r0 up to 17.10-r0)
- postgresql18 (from 18.0-r0 up to 18.4-r0)
Timeline and source
Published on 18 May 2026 and last revised on 20 May 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
docs.bell-sw.com (Advisory)
Other advisories for this package
postgresql15 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-61: UNIX Symbolic Link (Symlink) Following) in other software:
