> CVE-2026-54780 [LOW]

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PUBLISHED
2026-07-08 23:16
MODIFIED
2026-07-08 23:16
CVSS_SCORE V3
3.7
EPSS (Prob. Exploit)
0.24%
Top 85.2%
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, the CoreWCF WS-Security 1.0 receive pipeline validates ds:SignedInfo SignatureMethod against the configured SecurityAlgorithmSuite but does not validate each ds:Reference DigestMethod, allowing a sender to use a rejected digest algorithm such as SHA-1 while the message is still accepted. 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:L/A:N
EXPLOITABILITY
2.2
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/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
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

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

> WEAKNESSES

CWE-327 CWE-757

> CWE DETAILED DESCRIPTIONS

CWE-327: Use of a Broken or Risky Cryptographic Algorithm - The product uses a broken or risky cryptographic algorithm or protocol. | CWE-757: Selection of Less-Secure Algorithm During Negotiation - A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used in a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.

> GITHUB SECURITY ADVISORY

GHSA-4v55-cpmv-3vcm LOW

CoreWCF: WS-Security Reference DigestMethod Algorithm-Suite Bypass

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: WS-Security Reference DigestMethod Algorithm-Suite Bypass

AFFECTED PACKAGES:
Unknown / Unknown
2 versions affected
ALIASES:
GHSA-4v55-cpmv-3vcm

> 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-327: Use of a Broken or Risky Cryptographic Algorithm - The product uses a broken or risky cryptographic algorithm or protocol. | CWE-757: Selection of Less-Secure Algorithm During Negotiation ('A...
Nouvelle valeur:
CWE-327: Use of a Broken or Risky Cryptographic Algorithm - The product uses a broken or risky cryptographic algorithm or protocol. | CWE-757: Selection of Less-Secure Algorithm During Negotiation - A...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-327: Use of a Broken or Risky Cryptographic Algorithm - The product uses a broken or risky cryptographic algorithm or protocol. | CWE-757: Selection of Less-Secure Algorithm During Negotiation ('A...
Total des modifications: 2 Dernière mise à jour: 5 days ago

> REFERENCES

https://github.com/CoreWCF/CoreWCF/commit/58742312117cc671e6e9c694c2f5f9f669c171...
https://github.com/CoreWCF/CoreWCF/commit/9104e581cff3d047ace5e179bfae86807a44be...
https://github.com/CoreWCF/CoreWCF/commit/fea67b2cd73a5a85115c325d504303ec7382e1...
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-4v55-cpmv-3vcm
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