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High severity7.1NVD Advisory· Published Mar 20, 2017· Updated Jun 17, 2026

CVE-2016-6816

CVE-2016-6816

Description

The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack and/or obtain sensitive information from requests other then their own.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
org.apache.tomcat:tomcat-coyoteMaven
>= 9.0.0.M1, < 9.0.0.M129.0.0.M12
org.apache.tomcat:tomcat-coyoteMaven
>= 8.5.0, < 8.5.88.5.8
org.apache.tomcat:tomcat-coyoteMaven
>= 8.0.0RC1, < 8.0.398.0.39
org.apache.tomcat:tomcat-coyoteMaven
>= 7.0.0, < 7.0.737.0.73
org.apache.tomcat:tomcat-coyoteMaven
>= 6.0.0, < 6.0.486.0.48

Affected products

192
  • Apache/Tomcat178 versions
    cpe:2.3:a:apache:tomcat:6.0.0:*:*:*:*:*:*:*+ 177 more
    • cpe:2.3:a:apache:tomcat:6.0.0:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.1:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.10:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.11:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.12:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.13:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.14:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.15:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.16:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.17:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.18:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.19:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.2:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.20:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.21:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.22:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.23:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.24:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.25:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.26:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.27:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.28:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.29:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.3:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.30:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.31:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.32:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.33:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.34:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.35:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.36:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.37:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.38:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.39:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.4:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.40:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.41:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.42:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.43:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.44:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.45:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.46:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.47:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.5:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.6:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.7:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.8:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:6.0.9:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.22:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.23:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.24:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.25:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.26:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.27:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.28:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.29:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.30:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.31:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.32:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.33:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.34:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.35:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.36:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.37:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.38:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.39:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.40:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.41:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.42:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.43:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.44:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.45:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.46:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.47:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.48:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.49:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.50:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.51:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.52:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.53:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.54:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.55:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.56:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.57:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.58:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.59:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.60:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.61:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.62:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.63:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.64:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.65:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.66:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.67:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.68:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.69:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.70:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.71:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.72:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:7.0.9:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.0:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.1:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.10:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.11:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.12:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.13:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.14:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.15:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.16:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.17:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.18:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.19:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.2:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.20:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.21:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.22:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.23:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.24:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.25:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.26:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.27:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.28:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.29:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.3:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.30:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.31:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.32:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.33:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.34:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.35:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.36:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.37:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.38:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.4:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.5:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.6:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.7:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.8:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.0.9:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.5.0:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.5.1:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.5.2:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.5.3:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.5.4:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.5.5:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:8.5.6:*:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
    • cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*
  • ghsa-coords13 versions
    pkg:maven/org.apache.tomcat/tomcat-coyotepkg:rpm/suse/tomcat6&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/tomcat6&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/tomcat6&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/tomcat6&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/tomcat6&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20Raspberry%20Pi%2012%20SP2pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2
    >= 9.0.0.M1, < 9.0.0.M12+ 12 more
    • (no CPE)range: >= 9.0.0.M1, < 9.0.0.M12
    • (no CPE)range: < 6.0.53-0.56.1
    • (no CPE)range: < 6.0.53-0.56.1
    • (no CPE)range: < 6.0.53-0.56.1
    • (no CPE)range: < 6.0.53-0.56.1
    • (no CPE)range: < 6.0.53-0.56.1
    • (no CPE)range: < 8.0.32-10.13.2
    • (no CPE)range: < 8.0.36-17.1
    • (no CPE)range: < 7.0.78-7.13.4
    • (no CPE)range: < 8.0.36-17.1
    • (no CPE)range: < 7.0.78-7.13.4
    • (no CPE)range: < 8.0.32-10.13.2
    • (no CPE)range: < 8.0.36-17.1
  • Apache Software Foundation/Apache Tomcatv5
    Range: 9.0.0.M1 to 9.0.0.M11

Patches

Vulnerability mechanics

References

66

News mentions

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