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Apache Tomcat Open Redirect vulnerability

Moderate severity GitHub Reviewed Published Aug 25, 2023 to the GitHub Advisory Database • Updated Aug 8, 2025

Package

maven org.apache.tomcat.embed:tomcat-embed-core (Maven)

Affected versions

>= 8.5.0, < 8.5.93
>= 9.0.0-M1, < 9.0.80
>= 10.1.0-M1, < 10.1.13
>= 11.0.0-M1, < 11.0.0-M11

Patched versions

8.5.93
9.0.80
10.1.13
11.0.0-M11
maven org.apache.tomcat:tomcat (Maven)
>= 11.0.0-M1, < 11.0.0-M11
>= 10.1.0-M1, < 10.1.13
>= 9.0.0-M1, < 9.0.80
>= 8.5.0, < 8.5.93
11.0.0-M11
10.1.13
9.0.80
8.5.93

Description

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in FORM authentication feature Apache Tomcat.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.0.12, from 9.0.0-M1 through 9.0.79 and from 8.5.0 through 8.5.92. Older, EOL versions may also be affected. The vulnerability is limited to the ROOT (default) web application.

References

Published by the National Vulnerability Database Aug 25, 2023
Published to the GitHub Advisory Database Aug 25, 2023
Reviewed Aug 25, 2023
Last updated Aug 8, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(93rd percentile)

Weaknesses

URL Redirection to Untrusted Site ('Open Redirect')

A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Learn more on MITRE.

CVE ID

CVE-2023-41080

GHSA ID

GHSA-q3mw-pvr8-9ggc

Source code

Credits

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