CVE-2026-44504 Aegra: Cross-user run injection in /threads/{thread_id}/runs (IDOR)
Authenticated attackers can access and modify other users' AI conversation threads and state by exploiting missing authorization checks in the Aegra library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44504?
CVE-2026-44504 is a high-severity missing authorization vulnerability in aegra, published on 14 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Aegra is a drop-in replacement for LangSmith Deployments. Prior to 0.9.7, with multiple authenticated users on a shared instance are vulnerable to a cross-tenant IDOR. Any authenticated attacker, given another user's thread_id, can execute graph runs against the user's thread, read the user's full checkpoint state, and inject arbitrary messages into the user's conversation history. This vulnerability is fixed in 0.9.7.
Which versions are affected by CVE-2026-44504?
3 open source packages ship an affected version, including aegra-api.
| Package | Affected | Fixed in |
|---|---|---|
aegra-api PyPI | From 0.9.0 | 0.9.7 |
aegra-api PyPI | From 0.9.0 | 0.9.7 |
aegra-api PyPI | From 0.9.0 | 0.9.7 |
How do I fix CVE-2026-44504?
Upgrade aegra-api to 0.9.7 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-44504 being exploited?
There is no known exploitation of CVE-2026-44504 in the wild and no public exploit code.
Sources
Also known as GHSA-m98r-6667-4wq7, PYSEC-2026-2328.