CVE-2026-120971

MEDIUMCVSS 5.3/10EPSS 0.34%

Last modified

CVE-2026-120971 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A flaw was found in RESTEasy's default exception mapper. When an unhandled exception other than a WebApplicationException is not handled by an application exception mapper, RESTEasy returns the exception's localized message in the HTTP 500 response body. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

A flaw was found in RESTEasy's default exception mapper. When an unhandled exception other than a WebApplicationException is not handled by an application exception mapper, RESTEasy returns the exception's localized message in the HTTP 500 response body. A remote unauthenticated attacker who can trigger such an exception may obtain information contained in that message. The behavior was reproduced with RESTEasy 7.0.2.Final.

Metrics

EPSS Probability
0.34%

27.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red HatRed Hat build of Apache Camel 4 for Quarkus 3All versions
Red HatRed Hat build of Apicurio Registry 3All versions
Red HatRed Hat build of Debezium 3All versions
Red HatRed Hat Build of KeycloakAll versions
Red HatRed Hat build of QuarkusAll versions
Red HatRed Hat Fuse 7All versions
Red HatRed Hat JBoss Enterprise Application Platform 8All versions
Red HatRed Hat JBoss Enterprise Application Platform Expansion PackAll versions
Red HatRed Hat Satellite 6All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-120971?
A flaw was found in RESTEasy's default exception mapper. When an unhandled exception other than a WebApplicationException is not handled by an application exception mapper, RESTEasy returns the exception's localized message in the HTTP 500 response body. A remote unauthenticated attacker who can trigger such an exception may obtain information contained in that message. The behavior was reproduced with RESTEasy 7.0.2.Final.
How severe is CVE-2026-120971?
CVE-2026-120971 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.
How do I fix CVE-2026-120971?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST