CVE-2026-103119

criticalpriority · track · 0EPSS 0.006 · 48 %ileDEFR
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.59% (48th) EPSS
CVSS 9.1 · critical
Is it mine?
3 products
Check your exposure
Who says so?
2 sources
cert_bund · certfr

EPSS · scored 2026-10-27

Buffer under-read vulnerability in Apache Tomcat meant that a large non-blocking write could result in the response body being split between the current request and the next request received on that connection leading most likely to failure of the second request and possibly leakage of data from the first response to the second. This issue affects Apache Tomcat: from 11.0.0-M25 through 11.0.26. Users are recommended to upgrade to version 11.0.27, which fixes the issue.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.1
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.3–9.1

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Hsecondaryexploitability 3.9 · impact 5.2
v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-127US
04

affected products (3)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-4066Apache Tomcat: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE

    Ein entfernter Angreifer kann mehrere Schwachstellen in Apache Tomcat ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Informationen offenzulegen oder einen Denial of Service Angriff durchzuführen.

  • CERTFR-2026-AVI-1358Multiples vulnérabilités dans Apache TomcatFrançais2026-10-21vendor · certfrFR
06

sources

Which sources assert this record, and when.

cert_bundcertfrNVDCVE.orgMITRE
published 2026-10-20modified 2026-10-20
07

references (2) nvd

External citations — patches, advisories, analysis.

scry

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