CVE-2026-11853

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-10 · updated 2026-10-26
Weakness: CWE-59

Description

Debusine is an integrated solution to build, distribute and maintain a Debian-based distribution. Debian source packages (.dsc) and upload artifacts (.changes) are manifest files that name the files that make up the artifact. The parser used to read these files in Debusine accepted arbitrary fully user-controlled paths. The mergeuploads task could be abused to create arbitrary symbolic links on a worker, overwriting any file that the worker user has access to.

Affected products

Debian debusine: from 0.12.0 before 0.14.9 — fixed in 0.14.9

How to fix

Upgrade to a fixed version: Debian debusine 0.14.9. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-11853 or the next vulnerability affects your stack