3.7

CVE-2026-43514: apache software foundation apache tomcat Observable Timing Discrepancy

CVSS: 3.7v3.1LowAnalyzed
AliasesUBUNTU-CVE-2026-43514DEBIAN-CVE-2026-43514CGA-4357-whfm-9953
Published 12-05-2026Last modified 13-05-2026
Open JSON

Vulnerability summary

CVE-2026-43514 is a low (CVSS 3.7) Observable Timing Discrepancy vulnerability in apache software foundation apache tomcat. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.6% of scored vulnerabilities.

Overall risk
15/100
0100
Low · default modelHow is this calculated?
CVSS score
3.7/10
010
Low · v3.1 (CVE.org)
EPSS score
0.53%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 25 · Related 13
MGASA-2026-0139OPENSUSE-SU-2026:10925-1OPENSUSE-SU-2026:10926-1OPENSUSE-SU-2026:10927-1OPENSUSE-SU-2026:21117-1OPENSUSE-SU-2026:21121-1

Timeline

  1. 12-05-2026
    PublishedVulnerability first disclosed.
  2. 13-05-2026
    Last modifiedVulnerability information updated.

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 metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

+0.18 pp

From 0.35% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.53%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard20 products
  • camunda-8.9< 8.9.5-r2
  • camunda-zeebe-8.6< 8.6.39-r12
  • camunda-zeebe-8.7< 8.7.29-r1
  • camunda-zeebe-8.8< 8.8.24-r1
  • camunda-zeebe-8.9< 8.9.5-r2
Ubuntu6 products
  • tomcat10All versions (No fix recorded)
  • tomcat11All versions (No fix recorded)
  • tomcat6All versions (No fix recorded)
  • tomcat7All versions (No fix recorded)
  • tomcat8All versions (No fix recorded)
Debian3 products
  • tomcat10< 10.1.55-1~deb12u1 | < 10.1.55-1~deb13u1 | < 10.1.55-1
  • tomcat11< 11.0.22-1~deb13u1 | < 11.0.22-1
  • tomcat9< 9.0.70-2
Org.apache.tomcat2 products
  • tomcat< 9.0.118 | ≥ 10.1.0-M1, < 10.1.55 | ≥ 11.0.0-M1, < 11.0.22
  • tomcat-catalina< 9.0.118 | ≥ 10.1.0-M1, < 10.1.55 | ≥ 11.0.0-M1, < 11.0.22
Wolfi2 products
  • thingsboard-tb-mqtt-transport< 4.3.1.2-r0
  • thingsboard-tb-node< 4.3.1.2-r0
Apache1 product
  • tomcat≥ 7.0.0, ≤ 7.0.109 | ≥ 8.5.0, ≤ 8.5.100 | ≥ 9.0.0, < 9.0.118 | ≥ 10.1.0, < 10.1.55 | ≥ 11.0.0, < 11.0.22
Apache software foundation1 product
  • apache tomcat≥ 11.0.0-M1, ≤ 11.0.21 | ≥ 10.1.0-M1, ≤ 10.1.54 | ≥ 9.0.0.M1, ≤ 9.0.117 | ≥ 8.5.0, ≤ 8.5.100 | ≥ 7.0.0, ≤ 7.0.109
Org.apache.tomcat.embed1 product
  • tomcat-embed-core< 9.0.118 | ≥ 10.1.0-M1, < 10.1.55 | ≥ 11.0.0-M1, < 11.0.22

8 vendors · 36 products

References

14 links
Show all 14 references