CVE-2016-6816
At a glance
- Severity
- Not available
- EPSS
- EPSS 39.63 % · percentile 99 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
- NVD status
- Modified
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.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
Advisories
- GHSA-jc7p-5r39-9477 — Improper Input Validation in Apache Tomcat
European references
- ENISA EUVD · EUVD-2022-4326
- GCVE · GCVE-0-2016-6816
CERT-FR advisories
- CERTFR-2025-AVI-0370 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2022-AVI-568 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:apache:tomcat:6.0.0:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:6.0.1:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:6.0.2:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:6.0.3:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:6.0.4:*:*:*:*:*:*:*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: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:6.0.20:*:*:*:*:*:*:*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:6.0.30:*:*:*:*:*:*:*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:*:*:*:*:*:*:*- +138 more
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache Tomcat | affected 9.0.0.M1 to 9.0.0.M11 ; affected 8.5.0 to 8.5.6 ; affected 8.0.0.RC1 to 8.0.38 ; affected 7.0.0 to 7.0.72 ; affected 6.0.0 to 6.0.47 ; affected Earlier, unsupported versions may also be affected. |
References
- http://rhn.redhat.com/errata/RHSA-2017-0250.html
- https://www.exploit-db.com/exploits/41783/
- https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.0.39
- https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.0.M13
- http://www.securityfocus.com/bid/94461
- http://www.debian.org/security/2016/dsa-3738
- https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.73
- http://rhn.redhat.com/errata/RHSA-2017-0244.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- https://access.redhat.com/errata/RHSA-2017:0935
- https://security.netapp.com/advisory/ntap-20180607-0001/
- http://rhn.redhat.com/errata/RHSA-2017-0457.html
- http://rhn.redhat.com/errata/RHSA-2017-0246.html
- http://www.securitytracker.com/id/1037332
- https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.8
- https://tomcat.apache.org/security-6.html#Fixed_in_Apache_Tomcat_6.0.48
- https://access.redhat.com/errata/RHSA-2017:0455
- http://rhn.redhat.com/errata/RHSA-2017-0527.html
- http://rhn.redhat.com/errata/RHSA-2017-0245.html
- https://access.redhat.com/errata/RHSA-2017:0456
- http://rhn.redhat.com/errata/RHSA-2017-0247.html
- https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E
- https://usn.ubuntu.com/4557-1/
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |