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CVE-2026-15556VulnerabilityPublished Updated

CWE-347

Source GCVE Database

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Authoritative record:CVE-2026-15556· High 8.1

Not known to be exploited · CVSS 8.1 High : patch Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 soon.

Data as of 9 Nov 2026, 23:24 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.18.1
EPSS
0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red HatRed Hat JBoss Enterprise Application Platform 7.4.25Affected–Fixed in–
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-activemq-artemisAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-glassfish-jsfAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-ironjacamarAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-jackson-annotationsAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-jackson-coreAffected–Fixed in–

AI-suggested

A security update is available in Red Hat JBoss Enterprise Application Platform version 7.4.25 that addresses this vulnerability. Users should upgrade to this fixed version to remediate the issue. No additional mitigation steps are indicated in the vendor advisory.

Description

A vulnerability in Picketlink's service provider (SP) signature validation allows an attacker to forge a SAML response when the response contains zero assertion elements matching the signature check. This flaw enables authentication as any principal with any roles on the protected application.

References

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