CVE-2026-40044 Pachno 1.0.6 FileCache Deserialization Remote Code Execution
Unauthenticated attackers can execute arbitrary code by injecting malicious serialized objects into predictable cache files processed during bootstrap.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40044?
CVE-2026-40044 is a critical unsafe deserialization vulnerability in Pachno, published on 13 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Pachno 1.0.6 contains a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting malicious serialized objects into cache files. Attackers can write PHP object payloads to world-writable cache files with predictable names in the cache directory, which are unserialized during framework bootstrap before authentication checks occur.
Weakness: CWE-502
Which versions are affected by CVE-2026-40044?
How do I fix CVE-2026-40044?
No fix has been published for CVE-2026-40044 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-40044 being exploited?
There is no known exploitation of CVE-2026-40044 in the wild and no public exploit code.
Sources
Also known as GHSA-v448-wvgf-wj83.