7.5

CVE-2026-24880: apache software foundation apache tomcat HTTP Request/Response Smuggling

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-24880DEBIAN-CVE-2026-24880CGA-2gfj-h5x2-hmpr
Published 09-04-2026Last modified 10-04-2026
Open JSON

Vulnerability summary

CVE-2026-24880 is a high (CVSS 7.5) HTTP Request/Response Smuggling vulnerability in apache software foundation apache tomcat. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.5% 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
0.68%
0%100%
Low · +0.16 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

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other, unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.20, 10.1.52 or 9.0.116, which fix the issue.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

+0.16 pp

From 0.52% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.68%

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

Chainguard9 products
  • kayenta-2025.0< 2025.0.8-r10
  • kayenta-2025.1< 2025.1.6-r8
  • kayenta-2025.2< 2025.2.4-r4
  • kayenta-fips-2025.0< 2025.0.8-r12
  • kayenta-fips-2025.1< 2025.1.6-r9
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 | < 10.1.54-1
  • tomcat11< 11.0.22-1~deb13u1 | < 11.0.21-1
  • tomcat9< 9.0.70-2
Apache1 product
  • tomcat≥ 9.0.0, < 9.0.116 | ≥ 10.1.0, < 10.1.53 | ≥ 11.0.0, < 11.0.20
Apache software foundation1 product
  • apache tomcat≥ 11.0.0-M1, ≤ 11.0.18 | ≥ 10.1.0-M1, ≤ 10.1.52 | ≥ 9.0.0.M1, ≤ 9.0.115 | ≥ 8.5.0, ≤ 8.5.100 | ≥ 7.0.0, ≤ 7.0.109
Org.apache.tomcat1 product
  • tomcat-coyote≥ 7.0.0, < 9.0.116 | ≥ 10.1.0-M1, < 10.1.52 | ≥ 11.0.0-M1, < 11.0.20
Org.apache.tomcat.embed1 product
  • tomcat-embed-core≥ 7.0.0, < 9.0.116 | ≥ 10.1.0-M1, < 10.1.52 | ≥ 11.0.0-M1, < 11.0.20

7 vendors · 22 products

References

18 links
Show all 18 references