Apache Tomcat up to 9.0.81/9.0.118/10.1.55/11.0.22 error condition

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5$0-$5k0.70

Summaryinfo

A vulnerability identified as critical has been detected in Apache Tomcat up to 9.0.81/9.0.118/10.1.55/11.0.22. Affected by this issue is some unknown functionality. The manipulation leads to error condition. This vulnerability is referenced as CVE-2026-53434. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache Tomcat up to 9.0.81/9.0.118/10.1.55/11.0.22. It has been rated as critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a error condition vulnerability. Using CWE to declare the problem leads to CWE-390. The product detects a specific error, but takes no actions to handle the error. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue.

The advisory is shared at lists.apache.org. The identification of this vulnerability is CVE-2026-53434 since 06/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 323713 (Apache Tomcat 11.0.0.M1 < 11.0.23 multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (323713), EUVD (EUVD-2026-40228) and CERT Bund (WID-SEC-2026-2123). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Red Hat Enterprise Linux
  • SUSE openSUSE
  • SUSE Linux
  • Apache Tomcat
  • Ubuntu Linux

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 9.1
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Error condition
CWE: CWE-390
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 323713
Nessus Name: Apache Tomcat 11.0.0.M1 < 11.0.23 multiple vulnerabilities

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/09/2026 CVE reserved
06/29/2026 +20 days VulDB entry created
06/30/2026 +0 days Advisory disclosed
07/17/2026 +17 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Confirmed

CVE: CVE-2026-53434 (🔒)
GCVE (CVE): GCVE-0-2026-53434
GCVE (VulDB): GCVE-100-374705
EUVD: 🔒
CERT Bund: WID-SEC-2026-2123 - Apache Tomcat: Mehrere Schwachstellen

Entryinfo

Created: 06/30/2026 00:55
Updated: 07/17/2026 14:23
Changes: 06/30/2026 00:55 (53), 06/30/2026 02:55 (1), 06/30/2026 15:28 (2), 06/30/2026 18:37 (5), 07/03/2026 22:51 (11), 07/17/2026 14:23 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!