CVE-2026-8754 AstrBotDevs AstrBot File Upload chat.py post_file path traversal
Remote attackers can exploit a path traversal vulnerability in the file upload handler to read or modify arbitrary files on the server.
- 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-2026-8754?
CVE-2026-8754 is a medium-severity path traversal vulnerability in AstrBotDevs AstrBot, published on 17 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in AstrBotDevs AstrBot up to 4.23.5. Impacted is the function post_file of the file astrbot/dashboard/routes/chat.py of the component File Upload Handler. The manipulation of the argument filename results in path traversal. It is possible to launch the attack remotely. The exploit is now public and may be used. Upgrading to version 4.23.6 is recommended to address this issue. The patch is identified as aaec41e5054569ceaa1113593a34da7568e2d211. You should upgrade the affected component.
Weakness: CWE-22
Which versions are affected by CVE-2026-8754?
3 open source packages ship an affected version, including astrbot and AstrBot.
| Package | Affected | Fixed in |
|---|---|---|
astrbot PyPI | All versions | 4.23.6 |
astrbot PyPI | All versions | 4.23.6 |
AstrBot PyPI | All versions | 4.23.6 |
How do I fix CVE-2026-8754?
Upgrade astrbot to 4.23.6 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-8754 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8754 exists.
Sources
Also known as GHSA-f63h-wc26-pmvc, PYSEC-2026-2380.