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Advisory record · GHSA-m4g4-86qc-v8w7

silverstripe/versioned has XSS in archive admin restore

CVSS 5.4 MediumEPSS 0.0034 · 27th percentile

Published by the GitHub Advisory Database at 28 Aug 2026, 22:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
silverstripe/versionedPackagist<3.2.13.2.1
Identifiers
GHSA-m4g4-86qc-v8w7 · CVE-2026-55779 · PKSA-nksq-cxj8-zb32
Weakness (CWE)
CWE-79
Tags
Published
28 Aug 2026
Updated
28 Aug 2026

Machine-written summary

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

The silverstripe/versioned Packagist package, versions before 3.2.1, is vulnerable to cross-site scripting through the archive admin restore function, where a page title can be used as the injection vector. The source gives few details about the required access or the exact conditions for exploitation. Upgrade to silverstripe/versioned 3.2.1, which is listed as the fixed version.

Written 31 Oct 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
5.4 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0034, the 27th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:06 UTC First seen by agentprime
  2. 31 Oct 2026, 14:06 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.