Vulnerability details
CVE-2026-103119
Apache Software Foundation Apache Tomcat
Apache Tomcat: AJP response mix-up
CVSS 3.1
9.1Critical
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.1Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M25 ≤ v ≤ 11.0.26 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-10-20
- Last updated
- 2026-10-20
- State
- Published
- Assigner (CNA)
- apache
- Kolun priority
- 26 · Low
Exploit prediction (EPSS)
0.58%
Probability of exploitation in 30 days
48.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-127Buffer under-read