CVE-2026-55527 praisonaiagents vulnerable to arbitrary file write via unsanitized `user_id` in `FileMemory.__init__()` — path traversal to any writable location
Attackers can write arbitrary files by exploiting unsanitized user IDs in PraisonAI's FileMemory, potentially compromising system integrity.
- 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-2026-55527?
CVE-2026-55527 is a high-severity path traversal vulnerability in MervinPraison PraisonAI, published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, the FileMemory constructor joins unsanitized user_id into self.user_path. A caller supplying ../ or path separators can escape the memory directory and write JSON data to arbitrary process-writable locations. The fix sanitizes user_id before constructing self.user_path. This issue is fixed in version 1.6.58.
Which versions are affected by CVE-2026-55527?
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-2026-55527?
Upgrade praisonaiagents to 1.6.58 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-55527 being exploited?
There is no known exploitation of CVE-2026-55527 in the wild and no public exploit code.
Sources
Also known as GHSA-gxmw-5f7x-6g22, PYSEC-2026-3902.