CVE-2026-102729 Memory corruption in GUIX
A buffer overflow in Eclipse GUIX allows attackers to execute arbitrary code or cause denial of service via crafted theme resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-102729?
CVE-2026-102729 is a medium-severity memory corruption vulnerability in Eclipse Foundation GUIX, published on 29 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
`gx_binres_theme_load()` sizes its theme buffer for the theme it was asked for, and allocates it even when the resource holds no theme with that id. A theme id at or past the theme count declared by the resource gets a buffer of zero bytes. The load pass then walks past the end of the theme table, takes whatever follows as a theme header, and writes a `GX_THEME` and its tables into that zero-byte buffer.
Which versions are affected by CVE-2026-102729?
How do I fix CVE-2026-102729?
No fix has been published for CVE-2026-102729 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-102729 being exploited?
There is no known exploitation of CVE-2026-102729 in the wild and no public exploit code.
Sources
Also known as GHSA-372w-c338-xj8p, GHSA-xj26-f3rj-75vp.