Open Redirect in Coder
CVE-2026-111931
Coder from 2.0.0 before 2.34.8 contains an open redirect vulnerability in handleAPIKeySmuggling that allows attackers to redirect users externally via unsanitized r.URL.Path values. Attackers can craft links on trusted workspace app subdomains with paths beginning with double slashes, which become scheme-relative redirects to attacker sites for phishing.
Vulnerability class: Open Redirect
Published .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/coder/coder/security/advisories/GHSA-98qx-9p2x-c4wh (vendor-advisory)
- www.vulncheck.com/advisories/coder-2.0.0-before-2.34.8-open-redirect-via-worksp… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111931?
- CVE-2026-111931 is a medium-severity vulnerability in Coder, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2026-10-17.
- How severe is CVE-2026-111931?
- Medium severity. CVSS v3 base score is 4.3 out of 10.