CVE-2026-109321Grav Login OAuth Plugin before 1.4.3 Predictable Local Credentials Authentication Bypass
Updated under an hour ago ()
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It affects getgrav grav-plugin-login-oauth. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.40%, higher than 33% of scored CVEs.
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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.
- CVSS
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-1391
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.40% (percentile 33)
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 12, 2026
Affected products
getgrav grav-plugin-login-oauth getgrav:grav_plugin_login_oauth (from the name) | from 1.0.0-beta.1 before 1.4.3; 1.4.3 not affected | CNA record |
References
- https://github.com/getgrav/grav/security/advisories/GHSA-mj8v-hvf6-73gmvendor-advisory, third-party-advisory
- https://www.vulncheck.com/advisories/grav-login-oauth-plugin-before-1.4.3-predictable-local-credentials-authentication-bypassthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.