7.5

CVE-2026-34487: apache software foundation apache tomcat

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-34487DEBIAN-CVE-2026-34487CGA-cmm8-3qr8-j63m
Published 09-04-2026Last modified 10-04-2026
Open JSON

Vulnerability summary

CVE-2026-34487 is a high (CVSS 7.5) vulnerability in apache software foundation apache tomcat. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.45%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 19 · Related 11
MGASA-2026-0095OPENSUSE-SU-2026:10547-1OPENSUSE-SU-2026:10548-1OPENSUSE-SU-2026:10549-1OPENSUSE-SU-2026:20595-1OPENSUSE-SU-2026:20611-1

Timeline

  1. 09-04-2026
    PublishedVulnerability first disclosed.
  2. 10-04-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

0.00 pp

From 0.45% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.45%

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-8.8< 8.8.22-r0
  • camunda-zeebe-8.6< 8.6.39-r0
  • camunda-zeebe-8.7< 8.7.27-r0
  • camunda-zeebe-8.8< 8.8.22-r0
  • kayenta-2025.0< 2025.0.8-r11
Debian3 products
  • tomcat10< 10.1.55-1~deb12u1 | < 10.1.55-1~deb13u1 | < 10.1.54-1
  • tomcat11< 11.0.22-1~deb13u1 | < 11.0.21-1
  • tomcat9< 9.0.70-2
Ubuntu3 products
  • tomcat10All versions (No fix recorded)
  • tomcat11All versions (No fix recorded)
  • tomcat9All versions (No fix recorded)
Org.apache.tomcat2 products
  • tomcat≥ 9.0.13, < 9.0.117 | ≥ 10.1.0-M1, < 10.1.54 | ≥ 11.0.0-M1, < 11.0.21
  • tomcat-tribes≥ 9.0.13, < 9.0.117 | ≥ 10.1.0-M1, < 10.1.54 | ≥ 11.0.0-M1, < 11.0.21
Wolfi2 products
  • thingsboard-tb-mqtt-transport< 4.3.1.1-r11
  • thingsboard-tb-node< 4.3.1.1-r11
Apache1 product
  • tomcat≥ 9.0.13, < 9.0.117 | ≥ 10.1.0, < 10.1.54 | ≥ 11.0.0, < 11.0.21
Apache software foundation1 product
  • apache tomcat≥ 11.0.0-M1, ≤ 11.0.20 | ≥ 10.1.0-M1, ≤ 10.1.53 | ≥ 9.0.13, ≤ 9.0.116
Org.apache.tomcat.embed1 product
  • tomcat-embed-core≥ 9.0.13, < 9.0.117 | ≥ 10.1.0-M1, < 10.1.54 | ≥ 11.0.0-M1, < 11.0.21

8 vendors · 33 products

References

14 links
Show all 14 references