CVE record · CVE-2026-81829

Smallrye-jwt: quarkus-smallrye-jwt: smallrye-jwt: unauthenticated same-origin ssrf via unsanitized jwt kid header in awsalbkeyresolver

CVSS 5.3 MediumEPSS 0.0059 · 48th percentile

Published by the CVE Program (CNA: redhat) at 17 Sept 2026, 14:01 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
Red Hat	Red Hat build of Quarkus 3.27.5.SP2 Package name: quarkus-smallrye-jwt https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: unaffected
Red Hat	Red Hat build of Quarkus 3.33.3.SP2 Package name: quarkus-smallrye-jwt https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: unaffected
Red Hat	Exploit Intelligence Package name: exploit-intelligence/agent-client-rhel9 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat build of Apicurio Registry 3 Package name: quarkus-smallrye-jwt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat build of Apicurio Registry 3 Package name: smallrye-jwt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown
Red Hat	Red Hat build of Quarkus Package name: smallrye-jwt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat JBoss Enterprise Application Platform 8 Package name: smallrye-jwt https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: affected
Red Hat	Red Hat JBoss Enterprise Application Platform Expansion Pack Package name: smallrye-jwt https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: affected

Identifiers: CVE-2026-81829
CNA: redhat
Weakness (CWE): CWE-22
Tags: Red Hat build of Quarkus 3.27.5.SP2
Red Hat build of Quarkus 3.33.3.SP2
Red Hat Exploit Intelligence
Red Hat build of Apicurio Registry 3
Red Hat build of Quarkus
Red Hat JBoss Enterprise Application Platform 8
Red Hat JBoss Enterprise Application Platform Expansion Pack
Path traversal
Published: 17 Sept 2026
Updated: 9 Oct 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
5.3	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0059, the 48th percentile, on 5 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 17 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:69440 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:69470 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2026-81829 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2524980 issue-trackingredhat

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.