CVE-2026-40044: critical vulnerability in Pachno
Pachno 1.0.6 FileCache Deserialization Remote Code Execution
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Pachno · PachnoRelated CVEs — Pachno
In the same product, most dangerous first.
CVE-2026-40040HIGHPachno 1.0.6 Unrestricted File Upload Remote Code ExecutionEPSS 0.5%CVE-2026-40042CRITICALPachno 1.0.6 Wiki TextParser XML External Entity InjectionEPSS 0.4%CVE-2026-40039HIGHPachno 1.0.6 Open Redirection via return_to ParameterEPSS 0.3%CVE-2026-40038MEDIUMPachno 1.0.6 Stored Cross-Site Scripting via Multiple ParametersEPSS 0.2%CVE-2026-40041MEDIUMPachno 1.0.6 Cross-Site Request Forgery via State-Changing EndpointsEPSS 0.1%