CVE-2026-3099

Published: Mar 12, 2026 Last Modified: Mar 12, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,8
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: required
Scope: changed
Confidentiality: low
Integrity: low
Availability: low

Description

AI Translation Available

A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0011
Percentile
0,3th
Updated

EPSS Score Trend (Last 4 Days)

323

Reusing a Nonce, Key Pair in Encryption

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
https://access.redhat.com/security/cve/CVE-2026-3099
https://access.redhat.com/security/cve/CVE-2026-3099
https://bugzilla.redhat.com/show_bug.cgi?id=2442232
https://bugzilla.redhat.com/show_bug.cgi?id=2442232
https://gitlab.gnome.org/GNOME/libsoup/-/issues/495
https://gitlab.gnome.org/GNOME/libsoup/-/issues/495