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Vulnerability record · CVE-2025-55278 · published 5 November 2025

CVE-2025-55278: Improper verification of cryptographic signature vulnerability

Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. As a result, an attacker could potentially use expired or tampered tokens to gain unauthorized access to sensitive resources and perform actions with elevated privileges.

8.1 CVSS 3.1 High EPSS 0.19% · top 92.7% CWE-347 · Improper verification of cryptographic signatureCWE-613 · Insufficient session expiration Deferred
8.1CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. As a result, an attacker could potentially use expired or tampered tokens to gain unauthorized access to sensitive resources and perform actions with elevated privileges.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References

LinkTags
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0124203

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Source: NIST National Vulnerability Database (record CVE-2025-55278), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.