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Advisory record · GHSA-xc7j-3g8q-9vh4

YesWiki has stored XSS in Bazar form-field templates via unescaped field.label / field.hint (|raw('html'))

CVSS 5.5 MediumEPSS 0.0034 · 27th percentile

Published by the GitHub Advisory Database at 9 Jul 2026, 21:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
yeswiki/yeswikiPackagist<4.6.64.6.6
Identifiers
GHSA-xc7j-3g8q-9vh4 · CVE-2026-52772 · PKSA-p24r-4kjm-tm2m
Weakness (CWE)
CWE-79 · CWE-116
Tags
Published
9 Jul 2026
Updated
9 Jul 2026

Machine-written summary

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

Stored cross-site scripting in YesWiki versions before 4.6.6 lets a user who can edit Bazar form definitions inject script through field labels and hints, which then runs for anyone who views a form containing that field. The source describes the attacker as a form editor with the saisie_formulaire permission, which is granted to admins by default. Upgrade to YesWiki 4.6.6 or later, which is listed as the fixed version.

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
5.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0034, the 27th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:25 UTC First seen by agentprime
  2. 31 Oct 2026, 14:25 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.