CVE-2026-40044CRITICAL 9.8EPSS p37.9%

CVE-2026-40044CVE-2026-40044

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.48% probability of exploitation · percentile 37.9% · 2026-06-19T12:03:05Z
Published2026-04-13
Last modified2026-04-17

Underlying weaknesses· 1

CWE-502

References

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

1

TypeTargetConfidenceTier
WeaknessDeserialization of Untrusted Datacwe-5020%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.