CVE-2011-1475
MEDIUM · CVSS 5.0EPSS 8.7%EU EUVD
The HTTP BIO connector in Apache Tomcat 7.0.x before 7.0.12 does not properly handle HTTP pipelining, which allows remote attackers to read responses intended for other clients in opportunistic circumstances by examining the application data in HTTP packets, related to "a mix-up of responses for requests from different users."
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N- Weakness (CWE)
- CWE-20
- EPSS score
- 8.7% (95th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2022-4083)
- Published
- April 8, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2022-4083 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
References
- http://seclists.org/fulldisclosure/2011/Apr/97
- http://securityreason.com/securityalert/8188
- http://svn.apache.org/viewvc?view=revision&revision=1086349(Patch)
- http://svn.apache.org/viewvc?view=revision&revision=1086352(Patch)
- http://tomcat.apache.org/security-7.html(Vendor Advisory)
- http://www.securityfocus.com/archive/1/517363
- http://www.securityfocus.com/bid/47199
- http://www.securitytracker.com/id?1025303
- http://www.vupen.com/english/advisories/2011/0894
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66676
- https://issues.apache.org/bugzilla/show_bug.cgi?id=50957
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12374
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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