CVE-2026-84181: Improper Authentication vulnerability in Apache Camel Shiro component
CVE-2026-84181 key facts
- CISA KEV
- Not listed (catalogue checked )
- Highest advisory rating
- Medium
- CVSS base score
- 5.9 (Apache), 5.9 (Red Hat)
- Weakness
- CWE-488
- Fixed releases
- Apache: 4.18.5, 4.22.1
- Red Hat: 4.23.0, 4.18, 4.18.5, 4.22, 4.22.1
- Listed by VulniPulse
- Record changed
Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-84181; each belongs to its advisory, not to every product listed. How records are collected and checked.
How do I fix CVE-2026-84181?
Upgrade to a fixed release named by the vendor:
- Apache: 4.18.5, 4.22.1
- Red Hat: 4.23.0, 4.18, 4.18.5, 4.22, 4.22.1
- Upgrade to Apache Camel 4.23.0, which fixes the issue. (Apache)
- Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. (Apache)
Vendor advisories for CVE-2026-84181
Apache
1 advisory- Advisory severityMedium5.9
Medium [CVE-2026-84181] Improper Authentication vulnerability in Apache Camel Shiro component
CVE-2026-84181Source published Source updated
Improper Authentication vulnerability in Apache Camel Shiro component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The Shiro security processor skipped credential verification when the subject already bound to the current thread carried the same principal as the incoming exchange. Because the thread that carries a Camel exchange is drawn from a pool and reused across exchanges, a subject left bound by an earlier authenticated exchange could satisfy the check for a later one that presented no valid credentials of its own. The password on the incoming exchange was, in that case, never verified. The condition depends on thread reuse and on the principal matching, which is why it is not reached on every request, but it requires nothing of the…
- Affected products in this advisory
- Apache Camel Shiro
- Source-reported affected versions
- 4.0.0 before 4.18.5
- 4.19.0 before 4.22.1
- Source-reported fixed versions
- 4.18.5
- 4.22.1
- Mitigation guidance
- Upgrade to Apache Camel 4.23.0, which fixes the issue.
- Users on the 4.18.x LTS releases stream should upgrade to 4.18.5.
- Users on the 4.22.x LTS releases stream should upgrade to 4.22.1.
- For deployments that cannot upgrade immediately, ensure the Shiro subject is cleared from the thread at the end of every exchange so that no subject can be inherited by a later one.
Red Hat
1 advisory- Advisory severityMedium5.9
Medium [CVE-2026-84181] Authentication bypass via thread reuse
CVE-2026-84181Source published Source updated
Authentication bypass via thread reuse. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-488. Affected product named by the advisory: Red Hat Fuse 7.
- Related products — impact not confirmed
- Red Hat Fuse 7
- Source-reported affected versions
- < 4.0.0
- < 4.18.5
- < 4.19.0
- < 4.22.1
- Source-reported fixed versions
- 4.23.0
- 4.18
- 4.18.5
- 4.22
1 more entries in the full advisory.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
References
More Apache advisories
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