CVE-2026-86113 Missing authorization in bookwyrm
Authenticated users can tamper with other users' reading records by exploiting insecure direct object references in the edit function.
- 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-2026-86113?
CVE-2026-86113 is a high-severity missing authorization vulnerability in bookwyrm-social bookwyrm, published on 5 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
BookWyrm through 0.9.1 contains an authorization bypass vulnerability in the edit_readthrough function that allows authenticated users to modify other users' reading records. Attackers can exploit sequential ReadThrough IDs to overwrite arbitrary users' start dates, finish dates, progress, and progress mode, affecting reading statistics and exported data.
Weakness: CWE-639
Which versions are affected by CVE-2026-86113?
How do I fix CVE-2026-86113?
No fix has been published for CVE-2026-86113 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-2026-86113 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86113 exists.
Sources
Also known as GHSA-4p9p-pq58-9cvp.