CVE Tools
Sign in

CVE-2026-34500

Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled

Published: Apr 9, 2026Updated: Apr 14, 2026 Sources: CVE List NVD BDUCWE-287
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.5%
Top 63.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-287

Affected Products

Apache TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
tomcatapache
On-premWeb App
Networking Infrastructure / load-balancer-proxy
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
АЛЬТ СП 10АО «ИВК»
On-premOS
Operating Systems / linux-distro
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
red hat inc.commercialUSOperating Systemsaka red hat
ооо «ред софт»commercialRUOperating Systemsaka red soft
ао «ивк»commercialRUOperating Systemsaka ivk
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/04/09/29
openwall.com
https://github.com/apache/tomcat
github.com
and 5 more references View all →

Timeline

Published
Apr 9, 2026
Last Updated
Apr 14, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-34500 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows