Medium severity · published Oct 17, 2026
CVE-2026-111931
Coder 2.0.0 before 2.34.8 Open Redirect via Workspace App Proxy
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
coder · coder
2.0.0 before 2.34.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111931
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111931
github.com
https://github.com/coder/coder/security/advisories/GHSA-98qx-9p2x-c4wh
www.vulncheck.com
https://www.vulncheck.com/advisories/coder-2.0.0-before-2.34.8-open-redirect-via-workspace-app-proxy
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