Source: kanboard Version: 1.2.51+ds-2 Severity: grave Tags: security upstream Justification: user security hole X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for kanboard. At time of writing this bugreport it is unclear if upstream knows about the issue. CVE-2026-57862[0]: | Kanboard 1.2.52 and prior contains a server-side request forgery | vulnerability that allows authenticated users to bypass SSRF | protections by supplying hexadecimal IP address notation in user- | controlled URLs. Attackers can submit hexadecimal-encoded internal | IP addresses through the web link creation feature, causing cURL to | resolve and connect to internal network resources such as cloud | instance metadata services, localhost services, and RFC1918 | addresses while the isPrivateURL() filter in | app/Core/Http/Client.php incorrectly treats the input as safe due to | FILTER_VALIDATE_IP rejecting non-dotted-decimal notation. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-57862 https://www.cve.org/CVERecord?id=CVE-2026-57862 Regards, Salvatore
