CVE-2026-40044

CRITICAL 9.8

Pachno 1.0.6 FileCache Deserialization Remote Code Execution

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-502
Vendor	pancho
Product	pachno
Published	Apr 13, 2026
Last Updated	Apr 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

pancho / Pachno

1.0.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

zeroscience.mk: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5986.php vulncheck.com: https://www.vulncheck.com/advisories/pachno-filecache-deserialization-remote-code-execution

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab