CVE-2026-102249 REBUILD file-editor-save authorization
Attackers can remotely modify files via the file-editor-save endpoint without proper authorization, requiring immediate mitigation as no vendor fix is available.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102249?
CVE-2026-102249 is a medium-severity missing authorization vulnerability in REBUILD, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in REBUILD up to 4.4.11. This vulnerability affects unknown code of the file /commons/file-editor-save. The manipulation of the argument url/fileKey results in missing authorization. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-102249?
How do I fix CVE-2026-102249?
No fix has been published for CVE-2026-102249 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-102249 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-102249 exists.
Sources
Also known as GHSA-gfr9-3wh5-5636.