CVE-2026-86247
CVE-2026-86247: 2 tracked advisory records across Apache, Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Apache
1 advisory- Advisory severityHigh7.4
High [CVE-2026-86247] Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations
CVE-2026-86247Source published Source updated
Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.
- Affected products in this advisory
- Apache Tomcat Native
- Source-reported affected versions
- 2.0.0 through 2.0.15
- 1.3.0 through 1.3.8.
- through 1.3.8
- Source-reported fixed versions
- 2.0.16
- 1.3.9
- Mitigation guidance
- Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.
Red Hat
1 advisory- Advisory severityMedium4.8
Medium [CVE-2026-86247] Client certificate verification requirements can be down-graded via race condition
CVE-2026-86247Source published Source updated
Client certificate verification requirements can be down-graded via race condition. Red Hat rates this moderate (CVSS 4.8). Weakness: CWE-366. Affected products named by the advisory: Red Hat JBoss Web Server 5; Red Hat JBoss Web Server 6; Red Hat JBoss Web Server 7.
- Related products — impact not confirmed
- Red Hat JBoss Web Server 5
- Red Hat JBoss Web Server 6
- Red Hat JBoss Web Server 7
- Source-reported affected versions
- 2.0.0
- 2.0.15
- 1.3.0
- 1.3.8
- Source-reported fixed versions
- 2.0.16
- 1.3.9
- Mitigation guidance
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Android app · Google Play
Turn CVE research into alerts on your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.