Backdrop CMS before 1.35.1 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve configuration export… (CVE-2026-104476)
Backdrop CMS versions prior to 1.35.1 have an information disclosure vulnerability that allows unauthenticated attackers to download configuration export archives left on the server. These archives contain the full site configuration, including sensitive settings, which can be accessed without authentication.
AI Analysis
Technical Summary
Backdrop CMS before version 1.35.1 contains an information disclosure vulnerability (CVE-2026-104476) where unauthenticated attackers can retrieve configuration export archives left on the server after transfer. These archives, generated by users with configuration export permission, can be downloaded by attackers to obtain the full site configuration, exposing sensitive settings. The vulnerability has a CVSS 3.1 base score of 5.9, indicating a high severity with network attack vector, high attack complexity, no privileges required, no user interaction, and confidentiality impact only.
Potential Impact
An unauthenticated attacker can access and download configuration export archives containing sensitive site configuration data. This exposure can lead to leakage of sensitive settings, potentially aiding further attacks or reconnaissance. There is no impact on integrity or availability reported.
Mitigation Recommendations
A fix is available in Backdrop CMS version 1.35.1. Users should upgrade to version 1.35.1 or later to remediate this vulnerability. No other mitigation guidance is provided.
Backdrop CMS before 1.35.1 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve configuration export… (CVE-2026-104476)
Description
Backdrop CMS versions prior to 1.35.1 have an information disclosure vulnerability that allows unauthenticated attackers to download configuration export archives left on the server. These archives contain the full site configuration, including sensitive settings, which can be accessed without authentication.
CVSS v3.1
Score 5.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Backdrop CMS before version 1.35.1 contains an information disclosure vulnerability (CVE-2026-104476) where unauthenticated attackers can retrieve configuration export archives left on the server after transfer. These archives, generated by users with configuration export permission, can be downloaded by attackers to obtain the full site configuration, exposing sensitive settings. The vulnerability has a CVSS 3.1 base score of 5.9, indicating a high severity with network attack vector, high attack complexity, no privileges required, no user interaction, and confidentiality impact only.
Potential Impact
An unauthenticated attacker can access and download configuration export archives containing sensitive site configuration data. This exposure can lead to leakage of sensitive settings, potentially aiding further attacks or reconnaissance. There is no impact on integrity or availability reported.
Mitigation Recommendations
A fix is available in Backdrop CMS version 1.35.1. Users should upgrade to version 1.35.1 or later to remediate this vulnerability. No other mitigation guidance is provided.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-62pf-58wj-9727
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-104476"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6ac1399fa43b0b3b89d69a89
Added to database: 10/03/2026, 17:21:35 UTC
Last enriched: 10/03/2026, 17:36:54 UTC
Last updated: 10/04/2026, 02:46:02 UTC
Views: 4
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