> CVE-2026-54779 [MEDIUM]

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PUBLISHED
2026-07-08 23:16
MODIFIED
2026-07-08 23:16
CVSS_SCORE V3
5.9
EPSS (Prob. Exploit)
0.43%
Top 62.3%
DATA SOURCES:
NVD 🔗 2026-07-09 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01 GITHUB 🔗 2026-10-29 OSV 🔗 2026-11-02

> DESCRIPTION

CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF SAML token replay protection is inoperative because DefaultTokenReplayCache.TryAdd does not reject duplicate tokens when DetectReplayedTokens is enabled, allowing a captured token to be reused. This issue is fixed in versions 1.8.1 and 1.9.1.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EXPLOITABILITY
2.2
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-294 CWE-613

> CWE DETAILED DESCRIPTIONS

CWE-294: Authentication Bypass by Capture-replay - A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). | CWE-613: DEPRECATED: Insufficient Session Expiration - This entry has been deprecated because it was insufficiently clear. Consider CWE-1462 and its descendants.

> GITHUB SECURITY ADVISORY

GHSA-9jr3-rj99-8jq3 MODERATE

CoreWCF: SAML token replay protection is inoperative

AFFECTED PACKAGES:
NUGET / CoreWCF.Primitives
>= 1.9.0, < 1.9.1
Fixed in: 1.9.1
NUGET / CoreWCF.Primitives
< 1.8.1
Fixed in: 1.8.1

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

CoreWCF: SAML token replay protection is inoperative

AFFECTED PACKAGES:
Unknown / Unknown
2 versions affected
ALIASES:
GHSA-9jr3-rj99-8jq3

> HISTORIQUE DES MODIFICATIONS

Première apparition
08/07/2026 23:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-294: Authentication Bypass by Capture-replay - A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication...
Nouvelle valeur:
CWE-294: Authentication Bypass by Capture-replay - A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-294: Authentication Bypass by Capture-replay - A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication...
Total des modifications: 2 Dernière mise à jour: 5 days ago

> REFERENCES

https://github.com/CoreWCF/CoreWCF/commit/3800c4e2bb4c6fde00ddacefdc2221ef33d556...
https://github.com/CoreWCF/CoreWCF/commit/7b0b5231cf21b4b5c1fc3caac9981f8bee4382...
https://github.com/CoreWCF/CoreWCF/commit/84f8cff5a786b5aaa73448cb379d366a7df982...
https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1
https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1
https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-9jr3-rj99-8jq3
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