CVE record · CVE-2026-15243

Improper Validation of Certificate in CAS Client

CVSS 7.4 HighEPSS 0.0026 · 17th percentile

Published by the CVE Program (CNA: CERT-PL) at 24 Jul 2026, 11:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Apereo	Java Apereo CAS Client	affected 4.1.0 semver Other versions: unknown
Apereo	Jasig CAS Client Package name: org.jasig.cas.client https://mvnrepository.com/	affected 3.6.4 Other versions: unknown

Identifiers: CVE-2026-15243
CNA: CERT-PL
Weakness (CWE): CWE-297
Tags: Java Apereo CAS Client
Apereo Jasig CAS Client
Weak cryptography or TLS
Published: 24 Jul 2026
Updated: 24 Jul 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.4	High	4.0	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	CNA (CERT-PL)

CISA KEV Not listed.
EPSS 0.0026, the 17th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 24 Jul 2026. New records show when each source confirmed them.

Sources

References from the CNA

cert.pl/en/posts/2026/07/CVE-2026-15243 third-party-advisory
www.apereo.org/programs/software/cas product

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.