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CVE-2026-103119

9.1 critical SSVC exploitation: none Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 8

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 18:09
  2. References+1 references (now 2)NVD modified 2026-10-20 19:35
  3. StatusPublished → Awaiting AnalysisNVD modified 2026-10-20 19:35
  4. StatusReceived → PublishedNVD modified 2026-10-20 15:44
  5. StatusPublished → ReceivedNVD modified 2026-10-20 16:16
  6. CVSS9.1 (v3.1, CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)NVD modified 2026-10-20 16:16
  7. StatusReceived → PublishedNVD modified 2026-10-20 13:54
  8. First seenunscoredNVD modified 2026-10-20 14:16

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2