FKIE_CVE-2026-3099

Vulnerability from fkie_nvd - Published: 2026-03-12 14:16 - Updated: 2026-03-23 14:02
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
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.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-3099Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2442232Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://gitlab.gnome.org/GNOME/libsoup/-/issues/495Exploit, Issue Tracking, Third Party Advisory
Impacted products
Vendor Product Version
gnome libsoup -
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
To clipboard 

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      "value": "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."
    },
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      "lang": "es",
      "value": "Se encontr\u00f3 una falla en Libsoup. La implementaci\u00f3n de autenticaci\u00f3n digest del lado del servidor en la clase SoupAuthDomainDigest no rastrea adecuadamente los nonces emitidos ni aplica el atributo nonce-count (nc) incremental requerido. Esta vulnerabilidad permite a un atacante remoto capturar un \u00fanico encabezado de autenticaci\u00f3n v\u00e1lido y reproducirlo repetidamente. En consecuencia, el atacante puede eludir la autenticaci\u00f3n y obtener acceso no autorizado a recursos protegidos, suplantando al usuario leg\u00edtimo."
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  "id": "CVE-2026-3099",
  "lastModified": "2026-03-23T14:02:25.830",
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          "confidentialityImpact": "LOW",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.