CVE-2026-86248

LOWCVSS 9.8 · CRITICAL

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-287

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 3 mentions across 1 observed day

What's happening

  • 3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-09-23: 309-23
Referenced assets3 URLs
Full discourse3 posts
  • Kazuki Omo@omokazuki

    Tomcatの脆弱性(Critical: CVE-2026-76183, CVE-2026-86248, CVE-2026-86350, High: CVE-2026-75973, CVE-2026-77762, CVE-2026-77791, CVE-2026-78383, CVE-2026-78437, CVE-2026-79677, CVE-2026-87022, Medium: CVE-2026-73581, Low: CVE-2026-77756) https://security.sios.jp/vulnerability/tomcat-security-vulnerability-20260924/

    00012124
    372 followersView on X
  • SecAlerts@SecAlertsCo

    🐱 Apache Tomcat CVE-2026-86248: fix for CVE-2026-34500 was incomplete. OCSP checks still soft-fail even when disabled, so CLIENT_CERT auth may not reject as expected. CVSS 9.8. Affects 11.0.0-M14–11.0.25. #cybersecurity #ciso #cto #vulnerabilities https://secalerts.co/vulnerability/CVE-2026-86248?utm_campaign=x https://t.co/PgLaKoZ8xN

    0000056
    888 followersView on X
  • CVE@CVEnew

    CVE-2026-86248 CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat. This issue affects Apache Tomcat… https://www.cve.org/CVERecord?id=CVE-2026-86248

    00000731
    58.1K followersView on X

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