Vulnerability · Published Oct 9, 2026 · Assigned by mitre
CVE-2026-107914
High 7.8
In plain English
A high-severity security flaw in Backdrop from backdropcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Official description
Backdrop CMS 1.34 before 1.34.5 and 1.35 before 1.35.1 doesn't sufficiently protect configuration exports when delivering a compressed archive. This vulnerability is mitigated by the fact that an export must have been previously requested by someone with the "Synchronize, import, and export configuration" permission. NOTE: CVE-2026-107914 refers to the vulnerability in which config.admin.inc does not ensure that a file_unmanaged_delete operation occurs. Therefore, many archives could persist: config.tar.gz, config_0.tar.gz, config_1.tar.gz, etc. There is a separate config.module issue that could allow remote access by an anonymous user, but only for the one filename config.tar.gz.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| backdropcms | Backdrop | 1.34.0 – before 1.34.51.35.0 – before 1.35.1 |
Weakness: CWE-459 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N