CVE-2026-104476

medium

Backdrop CMS before 1.35.1 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve configuration export archives lef…

Backdrop CMS before 1.35.1 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve configuration export archives left on the server after transfer. Attackers can download compressed archives generated by users with configuration export permission to obtain the full site configuration, including sensitive settings.

CVSS

5.9

5.9 (CVSS v3.1)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-10-03 00:16

Modified: 2026-10-06 15:25

NVD status: Deferred

Last synced 3 days ago

Verified against the source API 2026-10-27 06:57 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-200

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://backdropcms.org/security/backdrop-sa-core-2026-006 disclosure@vulncheck.com
https://github.com/backdrop/backdrop disclosure@vulncheck.com
https://github.com/backdrop/backdrop/commit/1ae67061d9d487bb6cb3b8611191354052f34749 disclosure@vulncheck.com
https://www.vulncheck.com/advisories/backdrop-cms-before-1.35.1-information-disclosure-via... disclosure@vulncheck.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:57 UTC · record ↗

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