CVE-2026-30964

MEDIUM EPSS 9.6%
Published Mar 10, 20263mo ago · Modified Jun 17, 20261w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Mar 10, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowed_origins is configured, CheckAllowedOrigins reduces URL-like values to their host component and accepts on host match alone. This makes exact origin policies impossible to express: scheme and port differences are silently ignored. This vulnerability is fixed in 5.2.4.

CVSS Details

Base Score
5.4
Exploitability
2.8
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
9.6% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-346

Affected Products 3

VendorProductVersionRange
spomky-labswebauthn-lib*≥5.2.0  –  <5.2.4
spomky-labswebauthn-symfony-bundle*≥5.2.0  –  <5.2.4
spomky-labswebauthn_framwork*≥5.2.0  –  <5.2.4

References 3

  • github.com https://github.com/web-auth/webauthn-framework/commit/535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839
    Patch
  • github.com https://github.com/web-auth/webauthn-framework/commit/b4cd9a4394c35fcac6080fd2f84f4f58a30abc01
    Patch
  • github.com https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/web-auth/webauthn-framework/commit/535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839
    Patch
  • github.com https://github.com/web-auth/webauthn-framework/commit/b4cd9a4394c35fcac6080fd2f84f4f58a30abc01
    Patch