All vulnerabilities
CVE-2026-104449GHSA-4388-phmh-jrw8

YesWiki before 4.6.7 Unauthenticated Page Overwrite via Bazar id_fiche

YesWiki yeswiki
Open in ThreatlineRecord JSON
CVSS
8.3High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 6 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.28%Chance of exploitation activity in the next 30 days, higher than 19% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.6.7Fixed versionCVE List
Published2 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

  • 4.6.7yeswikiCVE List
  • 4.6.7yeswiki/yeswiki, composerGitHubcomposer require "yeswiki/yeswiki:^4.6.7"

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

YesWiki before 4.6.7 contains an access control vulnerability allowing unauthenticated attackers to overwrite any existing wiki page, including pages whose write ACL restricts editing, via the Bazar entry-creation flow. Attackers can submit a crafted entry with an attacker-controlled id_fiche matching an existing page, overwriting its body for mass defacement and content destruction.

Text from CVE List

Affected versions 3

  • yeswikiaffected: all versions before 4.6.7CVE List
  • yeswikiunaffected: 4.6.7CVE List
  • yeswiki/yeswiki, composer<= 4.6.6GitHub

References 2