CVE-2026-54774

HIGH

CVSS v3.1: 7.4

NetworkNo privilegesNo user interactionVendor advisory ref

Source data as of:

At a glance

Severity
HIGH
CVSS
7.4 v3.1 · NVD
EPSS
EPSS not provided by FIRST.org for this CVE
CISA KEV
No
Attack conditions (CVSS vector)
NetworkNo privilegesNo user interaction · Source: NVD Vector
Published
2026-07-08 · Modified: 2026-07-08
References
Jump to references (6)

CVSS / EPSS / KEV

CVSS v3.1 7.4 / 10 HIGH Source: NVD
EPSS — EPSS not provided by FIRST.org for this CVE Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

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, SamlSerializer skips final SignatureValue verification when a CoreWCF service validates SAML tokens using a non-X.509 signing token, allowing an attacker to reference a non-X.509 SecurityToken key identifier and bypass assertion signature verification. This issue is fixed in versions 1.8.1 and 1.9.1.

Record details

CVE ID
CVE-2026-54774
CVSS (v3.1)
7.4 (HIGH)
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploitability subscore
2.2
Impact subscore
5.2
CISA KEV
No
Weakness (CWE)
CWE-345, CWE-347
Affected configurations (CPE)
0
Published
2026-07-08
Modified
2026-07-08
Status
Received

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same weakness type (CWE)

CVE-2026-54763 CRITICAL CVSS 10.0 CVE-2021-45419 HIGH CVSS 8.8 CVE-2022-31877 HIGH CVSS 8.8 CVE-2026-54781 HIGH CVSS 7.4

Published the same year

CVE-2026-32871 CRITICAL CVSS 10.0 CVE-2026-46595 CRITICAL CVSS 10.0 CVE-2026-48282 CRITICAL CVSS 10.0 KEV CVE-2026-54763 CRITICAL CVSS 10.0
← Back to all records