Distribution advisory
This page covers CVE-2026-34980 as tracked by BellSoft, for the package cups. The fix is available in version 2.4.18-r0; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached from an adjacent network, attack complexity is high, an attacker needs no 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:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Adjacent network — the attacker has to sit on the same local or logical network.
- Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
- Privileges required: None — an unauthenticated stranger can try it.
- 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
BELL-CVE-2026-34980 is classified as CWE-20: Improper Input Validation. The application accepts input without checking that it has the expected form, so malformed values reach code that assumes they are well formed.
Affected software
BELL-CVE-2026-34980 is recorded against 1 package.
- cups (from 2.4.2-r5 up to 2.4.18-r0)
Timeline and source
Published on 4 April 2026 and last revised on 4 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
cups 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-20: Improper Input Validation) in other software:
