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CVE-2026-15556

Last refreshed2026-10-03

Status: UPDATED  |  Advisory ID: CVE-2026-15556

Key Details

CVECVE-2026-15556
CVSS Score / Version8.1 (High) / CVSS v3.1
Updated2026-09-25
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS Proseattack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is none.
Affected productsRed Hat Red Hat JBoss Enterprise Application Platform 7.4.25, Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7, Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8, Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9, and Red Hat Red Hat JBoss Enterprise Application Platform 7
Classified asCWE-347 (Improper Verification of Cryptographic Signature)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
Red HatRed Hat JBoss Enterprise Application Platform 7.4.25
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9
Red HatRed Hat JBoss Enterprise Application Platform 7
SubsystemsGeneral OT
SectorsMultiple

What to Know

A flaw was found in Picketlink's SP signature validation; a SAML response containing zero assertion elements matching the signature check can allow an attacker to forge a SAML response and auth as any principal with any roles on the protected application.

What to Do

Monitor Red Hat's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-15556
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-15556