Skip to main content
No exploitation reportedFix available

CVE-2021-20289

No exploitation reported by the sources we read.

  • Published2021-03-26
  • Fixed in4.6.1 · 4.5.10 · 3.16.0
  • WeaknessCWE-209

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-03-2617:15CVE publishedNVD

Versions per branch

OSV · NVD
resteasy-core
BranchAffectedFixed in
4.6≥ 4.6.0, < 4.6.14.6.1
4.x≥ 4.0.0, < 4.5.104.5.10
3.x≥ 3.0.0, < 3.16.03.16.0
Netapp oncommand insight
BranchAffectedFixed in
—all versionsno fix published
Oracle communications cloud native core console
BranchAffectedFixed in
1.9= 1.9.0no fix published

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • eap7-apache-cxfRed Hat:jboss_enterprise_application_platform:7.3::el8all versions · fixed in 0:3.3.12-1.redhat_00001.1.el8eapand 3 other packages
  • eap7-apache-cxfRed Hat:jboss_enterprise_application_platform:7.3::el7all versions · fixed in 0:3.3.12-1.redhat_00001.1.el7eapand 3 other packages
  • eap7-apache-cxfRed Hat:jboss_enterprise_application_platform:7.3::el6all versions · fixed in 0:3.3.12-1.redhat_00001.1.el6eapand 3 other packages
  • eap7-apache-sshdRed Hat:jboss_enterprise_application_platform:7.4::el8all versions · fixed in 0:2.7.0-1.redhat_00001.1.el8eap
  • eap7-apache-sshdRed Hat:jboss_enterprise_application_platform:7.4::el7all versions · fixed in 0:2.7.0-1.redhat_00001.1.el7eap
  • eap7-ironjacamarRed Hat:jboss_enterprise_application_platform:7.3::el8all versions · fixed in 0:1.5.3-1.Final_redhat_00001.1.el8eapand 8 other packages
  • eap7-ironjacamarRed Hat:jboss_enterprise_application_platform:7.3::el7all versions · fixed in 0:1.5.3-1.Final_redhat_00001.1.el7eapand 8 other packages
  • eap7-ironjacamarRed Hat:jboss_enterprise_application_platform:7.3::el6all versions · fixed in 0:1.5.3-1.Final_redhat_00001.1.el6eapand 8 other packages

52 more package ranges on OSV.dev

Vendor advisories

  • RHSA-2022:6407 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Integration Camel-K 1.8 security update

  • RHSA-2022:1179 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat support for Spring Boot 2.5.10 update

  • RHSA-2022:0164 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.5.1 for OpenShift image security and enhancement update

  • RHSA-2022:0155 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.5.1 security update

  • RHSA-2022:0152 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.5.1 security update on RHEL 8

  • RHSA-2022:0151 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.5.1 security update on RHEL 7

12 more advisories

Full record on NVD

Fix

  1. Update resteasy-core to 4.6.1 · 4.5.10 · 3.16.0
  2. Vendor fix Red Hat Product Security RHSA-2022:6407 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  3. Vendor fix Red Hat Product Security RHSA-2022:1179 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link for the update. You must be logged in to download the update.
  4. Vendor fix Red Hat Product Security RHSA-2022:0164 · 1 productTo update to the latest Red Hat Single Sign-On 7.5.1 for OpenShift image, Follow these steps to pull in the content: 1. On your master hosts, ensure you are logged into the CLI as a cluster administrator or user with project administrator access to the global "openshift" project. For example: $ o…
  5. Vendor fix Red Hat Product Security RHSA-2022:0155 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link (you must log in to download the update).
  6. Vendor fix Red Hat Product Security RHSA-2022:0146 · 1 productThis advisory is informational only. There are no code changes associated with it. No action is required.
  7. Vendor fix Red Hat Product Security RHSA-2021:5149 · 84 productsBefore applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.15.3read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-209known since 2026-10-23
  • NVDweakness (CWE)CWE-209read 2026-10-23
  • FIRST EPSSEPSS score1.4 %2026-11-12
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2021-03-31

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Published
2021-03-26
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-244r-fcj3-ghjq

Frequently asked questions

What is CVE-2021-20289?

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.

Is CVE-2021-20289 actively exploited?

Active exploitation of CVE-2021-20289 has not been confirmed. Its EPSS score was 1.4% on 2026-11-12, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-20289?

CVE-2021-20289 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Running Red Hat Single Sign-On 7.5.1? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record