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Advisory record · GHSA-8c28-5mp7-v24h

TYPO3 CMS vulnerable to Denial of Service in Page Error Handling

CVSS 5.9 MediumEPSS 0.0073 · 54th percentile

Published by the GitHub Advisory Database at 13 Dec 2022, 17:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
typo3/cms-corePackagist>=9.0.0, <9.5.38 || >=10.0.0, <10.4.33 || >=11.0.0, <11.5.209.5.38, 10.4.33, 11.5.20
typo3/cmsPackagist>=10.0.0, <10.4.33 || >=11.0.0, <11.5.2010.4.33, 11.5.20
Identifiers
GHSA-8c28-5mp7-v24h · BIT-typo3-2022-23500 · CVE-2022-23500 · PKSA-j3x1-dtrb-kbct · PKSA-wh51-qtyw-9mq5
Weakness (CWE)
CWE-405 · CWE-674
Tags
Published
13 Dec 2022
Updated
6 Dec 2023

Machine-written summary

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

TYPO3 CMS packages typo3/cms-core (versions 9.0.0 to before 9.5.38, 10.0.0 to before 10.4.33, and 11.0.0 to before 11.5.20) and typo3/cms (versions 10.0.0 to before 10.4.33 and 11.0.0 to before 11.5.20) are affected. An attacker who can send HTTP requests for invalid or non-existing resources can trigger the page error handler to call the application recursively, which can exhaust the web server's limits and cause denial of service. Upgrade typo3/cms-core to 9.5.38, 10.4.33 or 11.5.20, and typo3/cms to 10.4.33 or 11.5.20.

Written 5 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
5.9 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0073, the 54th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:32 UTC First seen by agentprime
  2. 31 Oct 2026, 14:32 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.