UpHeron
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Servers and applications

CVE-2011-1475

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."

Severity
Medium 5.0
Published
8 Apr 2011
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
8.7% in the next 30 daysHigher than 95% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Over the network · No login needed
Attacker can
Read some data
CVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
Apache TomcatServers and applications · cpe:a:apache:tomcat
  • Version 7.0.11
  • Version 7.0.10
  • Version 7.0.9
  • Version 7.0.8
All 13 release lines
  • Version 7.0.0-beta
  • Version 7.0.0
  • Version 7.0.1
  • Version 7.0.2
  • Version 7.0.3
  • Version 7.0.4
  • Version 7.0.5
  • Version 7.0.6
  • Version 7.0.7
  • Version 7.0.8
  • Version 7.0.9
  • Version 7.0.10
  • Version 7.0.11

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-1475
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-1475