Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/saltcorn/saltcorn/security/advisories/GHSA-f3g8-9xv5-77gv
- https://github.com/saltcorn/saltcorn/security/advisories/GHSA-f3g8-9xv5-77gv
FAQ
What is CVE-2026-42259?
CVE-2026-42259 is a documented vulnerability. 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 tha...
How severe is CVE-2026-42259?
CVSS scoring is not yet available for CVE-2026-42259. Check NVD for updates.
Is there a patch for CVE-2026-42259?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.