CVE-2026-34487 | Apache Tomcat up to 9.0.116/10.1.53/11.0.20 Bearer Token log file

VDB-356678 · CVE-2026-34487 · GCVE-0-2026-34487 APACHE TOMCAT UP TO 9.0.116/10.1.53/11.0.20 BEARER TOKEN LOG FILE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 1.68 Summaryinfo A vulnerability classified as problematic was found in Apache Tomcat up to 9.0.116/10.1.53/11.0.20. This vulnerability affects unknown code of the component Bearer Token Handler. Such manipulation leads to log file. This vulnerability is listed as CVE-2026-34487. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised. Detailsinfo A vulnerability was found in Apache Tomcat up to 9.0.116/10.1.53/11.0.20. It has been rated as problematic. Affected by this issue is an unknown function of the component Bearer Token Handler. The manipulation with an unknown input leads to a log file vulnerability. Using CWE to declare the problem leads to CWE-532. Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information. Impacted is confidentiality. CVE summarizes: Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering component of Apache Tomcat exposed the Kubernetes bearer token. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.13 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue. The weakness was presented by Bartlomiej Dmitruk. The advisory is available at lists.apache.org. This vulnerability is handled as CVE-2026-34487 since 03/30/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/09/2026). This vulnerability is assigned to T1592 by the MITRE ATT&CK project. Upgrading to version 9.0.117, 10.1.54 or 11.0.21 eliminates this vulnerability. Productinfo Type Application Server Software Vendor Apache Name Tomcat Version 9.0.116 10.1.0 10.1.1 10.1.2 10.1.3 10.1.4 10.1.5 10.1.6 10.1.7 10.1.8 10.1.9 10.1.10 10.1.11 10.1.12 10.1.13 10.1.14 10.1.15 10.1.16 10.1.17 10.1.18 10.1.19 10.1.20 10.1.21 10.1.22 10.1.23 10.1.24 10.1.25 10.1.26 10.1.27 10.1.28 10.1.29 10.1.30 10.1.31 10.1.32 10.1.33 10.1.34 10.1.35 10.1.36 10.1.37 10.1.38 10.1.39 10.1.40 10.1.41 10.1.42 10.1.43 10.1.44 10.1.45 10.1.46 10.1.47 10.1.48 10.1.49 10.1.50 10.1.51 10.1.52 10.1.53 11.0.0 11.0.1 11.0.2 11.0.3 11.0.4 11.0.5 11.0.6 11.0.7 11.0.8 11.0.9 11.0.10 11.0.11 11.0.12 11.0.13 11.0.14 11.0.15 11.0.16 11.0.17 11.0.18 11.0.19 11.0.20 License open-source Website Vendor: https://www.apache.org/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Log file CWE: CWE-532 / CWE-200 / CWE-284 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Tomcat 9.0.117/10.1.54/11.0.21 Timelineinfo 03/30/2026 CVE reserved 04/09/2026 +10 days Advisory disclosed 04/09/2026 +0 days VulDB entry created 04/09/2026 +0 days VulDB entry last update Sourcesinfo Vendor: apache.org Advisory: lists.apache.org Researcher: Bartlomiej Dmitruk Status: Confirmed CVE: CVE-2026-34487 (🔒) GCVE (CVE): GCVE-0-2026-34487 GCVE (VulDB): GCVE-100-356678 Entryinfo Created: 04/09/2026 22:12 Changes: 04/09/2026 22:12 (57) Complete: 🔍 Cache ID: 99:D54:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸