CVE-2017-5664

What it is

The error page mechanism of the Java Servlet Specification requires that, when an error occurs and an error page is configured for the error that occurred, the original request and response are forwarded to the error page. This means that the request is presented to the error page with the original HTTP method. If the error page is a static file, expected behaviour is to serve content of the file as if processing a GET request, regardless of the actual HTTP method. The Default Servlet in Apache Tomcat 9.0.0.M1 to 9.0.0.M20, 8.5.0 to 8.5.14, 8.0.0.RC1 to 8.0.43 and 7.0.0 to 7.0.77 did not do this. Depending on the original request this could lead to unexpected and undesirable results for static error pages including, if the DefaultServlet is configured to permit writes, the replacement or removal of the custom error page. Notes for other user provided error pages: (1) Unless explicitly coded otherwise, JSPs ignore the HTTP method. JSPs used as error pages must must ensure that they handle any error dispatch as a GET request, regardless of the actual method. (2) By default, the response generated by a Servlet does depend on the HTTP method. Custom Servlets used as error pages must ensure that they handle any error dispatch as a GET request, regardless of the actual method.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data tampering.

Exploit odds

16.6% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2017-06-06 14:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-15 16:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 16.6% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2017-06-06 14:29 UTC

Last modified

2026-10-15 16:17 UTC

Exploit probability

16.6% · EPSS, next 30 days

Weakness

CWE-755

Record status

Modified

Affected

• Apache Tomcat 7.0.0
• Apache Tomcat 7.0.1
• Apache Tomcat 7.0.2
• Apache Tomcat 7.0.3
• Apache Tomcat 7.0.4
• Apache Tomcat 7.0.5
• Apache Tomcat 7.0.6
• Apache Tomcat 7.0.7

Attack profile CVSS 3.0 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2017-5664.md and follow it. Check whether this project is affected by CVE-2017-5664. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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