CVE-2026-42259
Severity CVSS v4.0:
MEDIUM
Type:
CWE-601
URL Redirection to Untrusted Site ('Open Redirect')
Publication date:
07/05/2026
Last modified:
08/05/2026
Description
Saltcorn is an extensible, open source, no-code database application builder. Prior to versions 1.4.6, 1.5.6, and 1.6.0-beta.5, Saltcorn validates the post-login dest parameter with a string check that only blocks :/ and //. Because all WHATWG-compliant browsers normalise backslashes (\) to forward slashes (/) for special schemes, a payload such as /\evil.com/path slips through is_relative_url(), is emitted unchanged in the HTTP Location header, and causes the browser to navigate cross-origin to an attacker-controlled domain. The bug is reachable on a default install and only requires a victim who can be tricked into logging in via a crafted Saltcorn URL. This issue has been patched in versions 1.4.6, 1.5.6, and 1.6.0-beta.5.
Impact
Base Score 4.0
5.10
Severity 4.0
MEDIUM