CVE-2026-110907

High

Description

Backdrop CMS Core 1.35.x before 1.35.2 and 1.34.x before 1.34.6 mishandles tokens. A token is a small placeholder string (like [node:title] or [user:name]) used to automatically insert dynamic data into text. A browser is provided for selecting tokens by type. The product doesn't sufficiently limit access to the types of tokens that are available in the token browser. The names of the individual tokens are adequately protected.

SeverityHigh
CVSS7.5
Exploit probability—
ProductBackdrop
PublishedOct 15, 2026
First seenOct 15, 2026
Weakness typeCWE-669CWE-669

How to fix

Update
  • BackdropCMS Backdrop1.35.2, 1.34.6 or later

Affected products

ProductAffected versionsFixed in
BackdropCMS Backdrop1.35.0 ≤ v < 1.35.2, 1.34.0 ≤ v < 1.34.61.35.2, 1.34.6

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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