All vulnerabilities
CVE-2026-111933GHSA-8fxq-53rx-ph5fGO-2026-6265

Coder before 2.34.2 User Enumeration via Login Placeholder Hash

coder coderGoLibraries & packages
Open in ThreatlineRecord JSON
CVSS
6.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 12% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.34.2Also 2.33.8, 2.32.7 and 1 moreCVE List
Published17 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 2.34.2coderCVE List
  • 2.33.8coderCVE List
  • 2.32.7coderCVE List
  • 2.29.17coderCVE List
  • 2.34.2github.com/coder/coder/v2, GoOSVgo get github.com/coder/coder/v2@v2.34.2
  • 2.33.8github.com/coder/coder/v2, GoOSVgo get github.com/coder/coder/v2@v2.33.8
Show all 8 fixed versions
  • 2.32.7github.com/coder/coder/v2, GoOSVgo get github.com/coder/coder/v2@v2.32.7
  • 2.29.17github.com/coder/coder/v2, GoOSVgo get github.com/coder/coder/v2@v2.29.17

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a user enumeration vulnerability because userpassword.Compare() substitutes a placeholder hash derived from the string "hunter2" when a stored password hash is empty. Unauthenticated attackers can submit logins with the password "hunter2" and distinguish HTTP 403 from 401 responses to enumerate valid accounts and reveal the authentication provider of SSO-only users.

Text from CVE List

Affected versions 12

  • coderaffected: 2.34.0 before 2.34.2CVE List
  • coderunaffected: 2.34.2CVE List
  • coderaffected: 2.33.0 before 2.33.8CVE List
  • coderunaffected: 2.33.8CVE List
  • coderaffected: 2.30.0 before 2.32.7CVE List
  • coderunaffected: 2.32.7CVE List
  • coderaffected: all versions before 2.29.17CVE List
  • coderunaffected: 2.29.17CVE List
  • github.com/coder/coder/v2, Gofrom 2.34.0, fixed in 2.34.2OSV
  • github.com/coder/coder/v2, Gofrom 2.33.0, fixed in 2.33.8OSV
  • github.com/coder/coder/v2, Gofrom 2.30.0, fixed in 2.32.7OSV
  • github.com/coder/coder/v2, Gofrom first release, fixed in 2.29.17OSV

References 2