CVE-2026-104991 Phproject < 1.8.7 Missing Authorization via Issues REST API
Authenticated API users can bypass access controls to read restricted issue data and post unauthorized comments in Phproject.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104991?
CVE-2026-104991 is a high-severity missing authorization vulnerability in Alanaktion phproject, published on 2 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Phproject before 1.8.7 contains a missing object-level authorization vulnerability in the REST API issue endpoints (single_get, single_comments, single_comments_post) that allows authenticated API key holders to bypass the security.restrict_access confidentiality control by never invoking the allowAccess() authorization routine. Attackers can use a valid API key to read restricted issue contents and comments, including owner and author email addresses, and post unauthorized comments to issues they should not have access to.
Weakness: CWE-862
Which versions are affected by CVE-2026-104991?
How do I fix CVE-2026-104991?
No fix has been published for CVE-2026-104991 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-2026-104991 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104991 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-697f-vmv6-cx6w, GHSA-mpq9-v47x-3hw8.