The HTTP BIO connector in Apache Tomcat 7.0.x before 7.0.12 does not properly handle HTTP…
Priority LOW 34CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and GitHub.
Summary
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."
Why it matters now
EPSS 0.0869 95th percentileScored 2026-11-07
Fix Fixed org.apache.tomcat:tomcat (Maven): 7.0.12
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | org.apache.tomcat:tomcat (Maven) | 7.0.0 to before 7.0.12 | 7.0.12 | Patch available | GHSA-h6c8-rg87-f3pc |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 7.0.0 to before 7.0.12 Fixed in 7.0.12 Patch available GHSA-h6c8-rg87-f3pc
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:* | 7.0.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:* | 7.0.0 beta | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:* | 7.0.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:* | 7.0.2 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:* | 7.0.3 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:* | 7.0.4 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:* | 7.0.5 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:* | 7.0.6 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:* | 7.0.7 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:* | 7.0.8 | Vulnerable | Apache |
- cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:* Versions 7.0.0 beta Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:* Versions 7.0.1 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:* Versions 7.0.2 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:* Versions 7.0.3 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:* Versions 7.0.4 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:* Versions 7.0.5 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:* Versions 7.0.6 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:* Versions 7.0.7 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:* Versions 7.0.8 Vulnerable ·Apache
Remediation
- Fix · GHSA-h6c8-rg87-f3pc org.apache.tomcat:tomcat (Maven) Fixed in 7.0.12 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2011-1475
- 2026-10-03 Alias added: GHSA-h6c8-rg87-f3pc
- 2026-10-07 EPSS moved to the 95th–99th percentile
References
Patch 2
Advisory 3
Other 10
- ADV-2011-0894
- oval:org.mitre.oval:def:12374
- https://issues.apache.org/bugzilla/show_bug.cgi?id=50957
- 20110406 [SECURITY] CVE-2011-1475 Apache Tomcat information disclosure
- https://github.com/apache/tomcat/commit/d2e8f2ede7dea39f75f68384f331f38f094e4ed3
- https://github.com/apache/tomcat/commit/fd8a579e0e2379a84826b11700adf396e4ed2041
- https://github.com/apache/tomcat
- https://web.archive.org/web/20120605200856/http://www.securityfocus.com/bid/47199
- https://web.archive.org/web/20170202012852/http://www.securityfocus.com/archive/1/517363
- https://web.archive.org/web/20170317142459/http://www.securitytracker.com/id?1025303
More Apache Tomcat vulnerabilities
- TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
- TI-2020-01862 Improper privilege management in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
- TI-2016-07192 Improper access control in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
- TI-2017-09342 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
- TI-2017-09340 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
- TI-2026-26741 Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor KEVCVSS 3.1HIGH 7.5
Sources
- CVE-2011-1475 · CVE Program
- CVE-2011-1475 · NVD
- FIRST EPSS
- GHSA-h6c8-rg87-f3pc · GitHub Advisory Database · CC BY 4.0
- CVE-2011-1475 · Red Hat security data · CC BY 4.0
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