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Advisory record · GHSA-ggff-9mj3-7246

mailqueue TYPO3 extension affected by Insecure Deserialization in QueueableFileTransport

CVSS 5.2 MediumEPSS 0.0015 · 4th percentile

Published by the GitHub Advisory Database at 21 Jan 2026, 15:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
cpsit/typo3-mailqueuePackagist<0.4.3 || >=0.5.0, <0.5.10.4.3, 0.5.1
Identifiers
GHSA-ggff-9mj3-7246 · CVE-2026-0895 · PKSA-ykqx-xqdj-9z2x
Weakness (CWE)
CWE-502
Tags
Published
21 Jan 2026
Updated
3 Feb 2026

Machine-written summary

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

The mailqueue TYPO3 extension (cpsit/typo3-mailqueue) is vulnerable to insecure deserialization in its QueueableFileTransport component for versions before 0.4.3 and from 0.5.0 before 0.5.1. The source says the vulnerable code was copied from TYPO3 core, so applying the core fix does not protect the extension. Upgrade to 0.4.3 or 0.5.1, depending on your release line.

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 0.0015, the 4th 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.