CVE-2026-43514: CWE-208 Observable Timing Discrepancy in Apache Software Foundation Apache Tomcat
Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43514) in Apache Tomcat is due to an observable timing discrepancy during the comparison of the AJP secret, categorized under CWE-208 (Observable Timing Discrepancy). It affects a wide range of Apache Tomcat versions from 7.0.0 up to 11.0.21. The timing difference could potentially be used to glean information about the secret, but the impact is limited to confidentiality with no integrity or availability impact. The Apache Software Foundation has released fixed versions (11.0.22, 10.1.55, 9.0.118) that resolve this issue.
Potential Impact
The impact is limited to a potential information disclosure due to timing differences when comparing the AJP secret. The CVSS score of 3.7 reflects a low severity with no impact on integrity or availability. There are no known exploits in the wild. This vulnerability could theoretically allow an attacker to gain some information about the secret, but the overall risk is low.
Mitigation Recommendations
Users are advised to upgrade Apache Tomcat to versions 11.0.22, 10.1.55, or 9.0.118 where this vulnerability has been fixed. No other mitigation or temporary workaround is specified. Patch status is confirmed by the vendor advisory recommending these version upgrades.
CVE-2026-43514: CWE-208 Observable Timing Discrepancy in Apache Software Foundation Apache Tomcat
Description
Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
CVSS v3.1
Score 3.7low
Affected software
pkg:maven/org.apache.tomcat/tomcatRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43514) in Apache Tomcat is due to an observable timing discrepancy during the comparison of the AJP secret, categorized under CWE-208 (Observable Timing Discrepancy). It affects a wide range of Apache Tomcat versions from 7.0.0 up to 11.0.21. The timing difference could potentially be used to glean information about the secret, but the impact is limited to confidentiality with no integrity or availability impact. The Apache Software Foundation has released fixed versions (11.0.22, 10.1.55, 9.0.118) that resolve this issue.
Potential Impact
The impact is limited to a potential information disclosure due to timing differences when comparing the AJP secret. The CVSS score of 3.7 reflects a low severity with no impact on integrity or availability. There are no known exploits in the wild. This vulnerability could theoretically allow an attacker to gain some information about the secret, but the overall risk is low.
Mitigation Recommendations
Users are advised to upgrade Apache Tomcat to versions 11.0.22, 10.1.55, or 9.0.118 where this vulnerability has been fixed. No other mitigation or temporary workaround is specified. Patch status is confirmed by the vendor advisory recommending these version upgrades.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-01T16:22:01.182Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a034c88cbff5d8610fea6f2
Added to database: 05/12/2026, 15:51:36 UTC
Last enriched: 05/19/2026, 18:40:56 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 154
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.