CVE-2026-42259

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/saltcorn/saltcorn/security/advisories/GHSA-f3g8-9xv5-77gv
https://github.com/saltcorn/saltcorn/security/advisories/GHSA-f3g8-9xv5-77gv

Configurations

No configuration.

History

08 May 2026, 23:16

Type	Values Removed	Values Added
References	~~() https://github.com/saltcorn/saltcorn/security/advisories/GHSA-f3g8-9xv5-77gv -~~	() https://github.com/saltcorn/saltcorn/security/advisories/GHSA-f3g8-9xv5-77gv -

07 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-07 20:16

Updated : 2026-05-08 23:16

NVD link : CVE-2026-42259

Mitre link : CVE-2026-42259

CVE.ORG link : CVE-2026-42259

JSON object : View

Products Affected

No product.

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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