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Advisory record · GHSA-7vp9-x248-9vr9

TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool

CVSS 5.2 MediumEPSS 0.0018 · 8th percentile

Published by the GitHub Advisory Database at 13 Jan 2026, 21:54 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
typo3/cms-corePackagist>=14.0.0, <14.0.2 || >=13.0.0, <13.4.23 || >=12.0.0, <12.4.41 || >=11.0.0, <11.5.49 || >=10.0.0, <10.4.5514.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55
Identifiers
GHSA-7vp9-x248-9vr9 · CVE-2026-0859 · PKSA-rtck-8z1q-gn5s
Weakness (CWE)
CWE-502
Tags
Published
13 Jan 2026
Updated
3 Feb 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

TYPO3 CMS core (typo3/cms-core) versions 10.0.0 up to 10.4.55, 11.0.0 up to 11.5.49, 12.0.0 up to 12.4.41, 13.0.0 up to 13.4.23, and 14.0.0 up to 14.0.2 are affected. A local user who can write to the mail spool directory can plant a file that TYPO3 deserializes without class restrictions, which can lead to arbitrary PHP code execution. The issue is triggered when file spooling is enabled and the mailer spool send command runs via scheduler or cron. Upgrade to 10.4.55, 11.5.49, 12.4.41, 13.4.23, or 14.0.2.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.2 Medium 4.0 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H CNA (TYPO3)
  • CISA KEV Not listed.
  • EPSS 0.0018, the 8th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:26 UTC First seen by agentprime
  2. 31 Oct 2026, 14:26 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.