CVE-2026-87876

3.0 LOW 0.3% exploit odds Fix listed Other Device

What it is

Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler (printer ACL validation and private-attribute filtering) could allow bypass of username-based access controls in certain configurations.

At a glance

Exploitability: Can be exploited from the same network segment with a low-privilege account, but needs a user to act. Limited direct impact.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-09-09 17:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-06 20:17 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 3.0 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-09-09 17:17 UTC
Last modified: 2026-11-06 20:17 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-178
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 3.0

Attack vector: Adjacent network
Complexity: Low
Privileges needed: Low
User interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Raw vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-87876.md and follow it. Check whether this project is affected by CVE-2026-87876. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record