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Advisory record · GHSA-52vf-hvv3-98h7

xwiki vulnerable to Improper Handling of Exceptional Conditions

CVSS 6.5 MediumEPSS 0.011 · 65th percentile

Published by the GitHub Advisory Database at 3 Mar 2023, 22:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.platform:xwiki-platform-rendering-parserMaven>=6.0, <13.10.10 || >=14.0, <14.4.6 || >=14.5, <14.9-rc-113.10.10, 14.4.6, 14.9-rc-1
Identifiers
GHSA-52vf-hvv3-98h7 · CVE-2023-26479
Weakness (CWE)
CWE-755
Tags
Published
3 Mar 2023
Updated
10 Sept 2026

Machine-written summary

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

Versions of the xwiki-platform-rendering-parser Maven package from 6.0 up to 13.10.10, from 14.0 up to 14.4.6, and from 14.5 up to 14.9-rc-1 are affected. A user with write rights can insert deeply nested group content that makes the parser throw a StackOverflowError, which can make pages such as the user index and page index unusable. Upgrade to 13.10.10, 14.4.6, or 14.9-rc-1, depending on your release line. Increasing the JVM stack size with the -Xss parameter is a temporary workaround only, since it does not stop the issue from recurring with other content.

Written 2 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
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.011, the 65th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 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.