CVE-2026-91012 Apache Karaf - Path Traversal & Privilege Escalation

Apache Karaf config.core.impl.ConfigRepositoryImpl contains a path traversal vulnerability caused by insufficient validation of file paths derived from user-supplied input in configuration update methods, letting manager-role users write arbitrary files within the Karaf process writable directories, exploit requires manager role privileges.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.63% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
File System Write, Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-22

Vendor fix

Update to a version where ConfigRepositoryImpl.update() properly validates file paths to prevent path traversal, or apply patches that restrict file writes to ${karaf.etc} directory.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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