All vulnerabilities
CVE-2026-109321GHSA-mj8v-hvf6-73gm

grav-plugin-login-oauth: Grav Login OAuth Plugin before 1.4.3 Predictable Local Credentials Authentication Bypass

getgrav grav-plugin-login-oauth
Open in ThreatlineRecord JSON
CVSS
9.3Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.40%Chance of exploitation activity in the next 30 days, higher than 33% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.4.3Fixed versionCVE List
Published12 Oct 2026Updated 18 Oct 2026CVE List

What fixes it

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

Description

Grav Login OAuth plugin (grav-plugin-login-oauth) before 1.4.3 provisions OAuth accounts as ordinary Grav users with a deterministic <provider>.<id> username and an unsalted MD5 hash of the provider identifier as the password, without disabling password login. Unauthenticated remote attackers who learn or guess a provider identifier can reproduce these credentials and log in, gaining administrative control of privileged accounts.

Text from CVE List

Affected versions 2

  • grav-plugin-login-oauthaffected: 1.0.0-beta.1 before 1.4.3CVE List
  • grav-plugin-login-oauthunaffected: 1.4.3CVE List

References 2