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CVE-2026-54430

Server-Site Request Forgery in liboauth2

liboauth2 is vulnerable to Server-Side Request Forgery in oauth2_jose_jwks_aws_alb_resolve() function. The AWS ALB verifier reads both signer and kid from the unverified JWT header. If signer matches the configured ARN, kid is appended to alb_base_url without URL encoding or path sanitization, and the HTTP GET is issued before signature verification. This allows an attacker to force the server to send a GET request to an attacker-chosen internal path. This issue was fixed in version 2.3.0

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Openidc
Products
Liboauth2
CVE-2026-54431

Improper Data Validation in liboauth2

In liboauth2 the Demonstrating Proof-of-Possession (DPoP) verifier accepts a proof whose JSON Web Key (jwk) header contains private key material. RFC 9449 section 4.3 step 7 requires the verifier to reject such a proof but oauth2_token_verify() function returns success for a malformed DPoP proof that embeds the private Elliptic Curve (EC) key in the header. This issue was fixed in version 2.3.0

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Openidc
Products
Liboauth2
CVE-2026-11946

GetEndpoints Memory Exhaustion in open62541

An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. The endpointUrl field of GetEndpointsRequest is not validated for length. An attacker can declare an arbitrarily large string (up to ~4.09 GB via the UInt32 length field) delivered across intermediate chunks without ever sending the final chunk. The server buffers all chunks in RAM indefinitely until the SecureChannel times out. The attack is pre-session and bypasses all encryption configurations. The issue affects open62541: from 1.4.0 through 1.4.16, from 1.5.0 through 1.5.4, master.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Open62541
Products
Open62541
CVE-2026-27404

WordPress LMS theme <= 9.7 - Reflected Cross Site Scripting (XSS) vulnerability

Unauthenticated Cross Site Scripting (XSS) in LMS <= 9.7 versions.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Designthemes Wordpress
Products
Lms Wordpress
CVE-2026-27430

WordPress TheFox theme <= 3.9.76 - Reflected Cross Site Scripting (XSS) vulnerability

Unauthenticated Cross Site Scripting (XSS) in TheFox <= 3.9.76 versions.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Tranmautritam Wordpress
Products
Thefox Wordpress