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Advisory record · GHSA-4p9g-qgx9-397p

Denial of Service in Page Error Handling

CVSS 5.9 MediumEPSS 0.017 · 77th percentile

Published by the GitHub Advisory Database at 23 Mar 2021, 01:54 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
typo3/cms-corePackagist>=10.0.0, <10.4.14 || >=11.0.0, <11.1.1 || >=9.0.0, <9.5.2510.4.14, 11.1.1, 9.5.25
typo3/cmsPackagist>=10.0.0, <10.4.14 || >=11.0.0, <11.1.1 || >=9.0.0, <9.5.2510.4.14, 11.1.1, 9.5.25
Identifiers
GHSA-4p9g-qgx9-397p · BIT-typo3-2021-21359 · CVE-2021-21359 · PKSA-8svt-p3nh-mpwn · PKSA-g918-9bjy-w911
Weakness (CWE)
CWE-405 · CWE-674
Tags
Published
23 Mar 2021
Updated
8 Jul 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 0.017, the 77th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 23 Mar 2021. New records show when each source confirmed them.

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.