CVE-2026-55528 praisonaiagents: AgentServer declares auth_token but never enforces it on any route (CWE-862)
Attackers can bypass authentication in PraisonAI agents to subscribe or publish data without valid tokens when auth is configured.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-55528?
CVE-2026-55528 is a high-severity missing authorization vulnerability in MervinPraison PraisonAI, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, AgentServer exposes ServerConfig.auth_token but AgentServer._create_app does not check it on any route. A remote caller can subscribe, publish, and perform other actions without a valid bearer token or X-Auth-Token even when authentication is configured. This issue is fixed in version 1.6.58.
Which versions are affected by CVE-2026-55528?
3 open source packages ship an affected version, including praisonaiagents.
| Package | Affected | Fixed in |
|---|---|---|
praisonaiagents PyPI | All versions | 1.6.58 |
praisonaiagents PyPI | All versions | 1.6.58 |
praisonaiagents PyPI | All versions | 1.6.58 |
How do I fix CVE-2026-55528?
Upgrade praisonaiagents to 1.6.58 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-55528 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55528 exists.
Sources
Also known as GHSA-7g3p-92qq-8wvh, PYSEC-2026-3899.