Log in Start free

Vulnerability · Published Mar 26, 2021 · Assigned by redhat

CVE-2021-20289

Medium 5.3

In plain English

A medium-severity security flaw in resteasy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)1.4%top 27.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A flaw was found in RESTEasy in all versions of RESTEasy up to 4.6.0.Final. The endpoint class and method names are returned as part of the exception response when RESTEasy cannot convert one of the request URI path or query values to the matching JAX-RS resource method's parameter value. The highest threat from this vulnerability is to data confidentiality.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.jboss.resteasy:resteasy-core4.5.10GHSA-244r-fcj3-ghjq
Mavenorg.jboss.resteasy:resteasy-core3.16.0GHSA-244r-fcj3-ghjq
Mavenorg.jboss.resteasy:resteasy-core4.6.1GHSA-244r-fcj3-ghjq
Ubuntu:25.10resteasyno fix listedUBUNTU-CVE-2021-20289
Ubuntu:26.04:LTSresteasyno fix listedUBUNTU-CVE-2021-20289
Ubuntu:26.10resteasyno fix listedUBUNTU-CVE-2021-20289
Ubuntu:22.04:LTSresteasy3.03.0.26-3ubuntu0.1UBUNTU-CVE-2021-20289
Ubuntu:22.04:LTSresteasy3.03.0.26-3ubuntu0.1USN-7630-1
Ubuntu:24.04:LTSresteasy3.03.0.26-6ubuntu0.24.04.1UBUNTU-CVE-2021-20289
Ubuntu:24.04:LTSresteasy3.03.0.26-6ubuntu0.24.04.1USN-7630-1
Ubuntu:25.10resteasy3.0no fix listedUBUNTU-CVE-2021-20289
Ubuntu:26.04:LTSresteasy3.0no fix listedUBUNTU-CVE-2021-20289
Ubuntu:26.10resteasy3.0no fix listedUBUNTU-CVE-2021-20289

Affected products (as reported)

VendorProductVersions
n/a resteasy resteasy 3.11.5.Final, resteasy 3.15.2.Final, resteasy 4.5.10.Final, resteasy 4.6.1.Final, resteasy 4.6.2.Final

Weakness: CWE-209

References