CVE-2026-8784 npitre cramfs-tools cramfsck.c change_file_status symlink
Local attackers can exploit symlink following in cramfsck to read or modify arbitrary files via crafted images.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8784?
CVE-2026-8784 is a medium-severity path traversal vulnerability in npitre cramfs-tools, published on 18 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue.
Which versions are affected by CVE-2026-8784?
How do I fix CVE-2026-8784?
No fix has been published for CVE-2026-8784 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-8784 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8784 exists.
Sources
Also known as GHSA-qv27-xjwp-hw6f.