YesWiki before 4.6.7 contains an access control vulnerability allowing unauthenticated attackers to overwrite any existing wiki page, including… (CVE-2026-104449)
YesWiki versions prior to 4.6.7 have an access control vulnerability that allows unauthenticated attackers to overwrite any existing wiki page, including those with restricted write access controls. This occurs via the Bazar entry-creation flow by submitting a crafted entry with an attacker-controlled id_fiche matching an existing page, enabling mass defacement or content destruction.
AI Analysis
Technical Summary
CVE-2026-104449 describes an access control vulnerability in YesWiki before version 4.6.7. The flaw allows unauthenticated attackers to overwrite existing wiki pages regardless of their write ACL restrictions by exploiting the Bazar entry-creation mechanism. Attackers can craft entries with an id_fiche that matches an existing page, overwriting its content. This vulnerability can lead to mass defacement and destruction of wiki content.
Potential Impact
The vulnerability allows unauthenticated attackers to modify the content of any existing wiki page, bypassing access control restrictions. This can result in mass defacement and destruction of wiki content, impacting the integrity and availability of the wiki.
Mitigation Recommendations
A fix is available in YesWiki version 4.6.7. Users should upgrade to version 4.6.7 or later to remediate this vulnerability. No other mitigation guidance is provided in the available data.
YesWiki before 4.6.7 contains an access control vulnerability allowing unauthenticated attackers to overwrite any existing wiki page, including… (CVE-2026-104449)
Description
YesWiki versions prior to 4.6.7 have an access control vulnerability that allows unauthenticated attackers to overwrite any existing wiki page, including those with restricted write access controls. This occurs via the Bazar entry-creation flow by submitting a crafted entry with an attacker-controlled id_fiche matching an existing page, enabling mass defacement or content destruction.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-104449 describes an access control vulnerability in YesWiki before version 4.6.7. The flaw allows unauthenticated attackers to overwrite existing wiki pages regardless of their write ACL restrictions by exploiting the Bazar entry-creation mechanism. Attackers can craft entries with an id_fiche that matches an existing page, overwriting its content. This vulnerability can lead to mass defacement and destruction of wiki content.
Potential Impact
The vulnerability allows unauthenticated attackers to modify the content of any existing wiki page, bypassing access control restrictions. This can result in mass defacement and destruction of wiki content, impacting the integrity and availability of the wiki.
Mitigation Recommendations
A fix is available in YesWiki version 4.6.7. Users should upgrade to version 4.6.7 or later to remediate this vulnerability. No other mitigation guidance is provided in the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h2q6-cgj7-p65g
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-104449"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6abfee8ea43b0b3b89e55037
Added to database: 10/02/2026, 17:49:02 UTC
Last enriched: 10/02/2026, 17:58:42 UTC
Last updated: 10/02/2026, 21:26:08 UTC
Views: 2
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