CVE-2026-42078 PPTAgent: Arbitrary File Write + Directory Creation via markdown_table_to_image
Attackers can write arbitrary files and create directories via the markdown_table_to_image function in PPTAgent.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-42078?
CVE-2026-42078 is a medium-severity path traversal vulnerability in icip-cas PPTAgent, published on 4 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
PPTAgent is an agentic framework for reflective PowerPoint generation. Prior to commit 418491a, PPTAgent is vulnerable to arbitrary file write and directory creation via markdown_table_to_image. This issue has been patched via commit 418491a.
Weakness: CWE-22
Which versions are affected by CVE-2026-42078?
3 open source packages ship an affected version, including pptagent.
| Package | Affected | Fixed in |
|---|---|---|
pptagent PyPI | All versions | 1.1.36 |
pptagent PyPI | All versions | 1.1.36 |
pptagent PyPI | All versions | 1.1.36 |
How do I fix CVE-2026-42078?
Upgrade pptagent to 1.1.36 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-42078 being exploited?
There is no known exploitation of CVE-2026-42078 in the wild and no public exploit code.
Sources
Also known as GHSA-hrcw-xc63-g29m, PYSEC-2026-2893.