Medium severity6.1NVD Advisory· Published Jun 10, 2021· Updated Jun 17, 2026
CVE-2021-20293
CVE-2021-20293
Description
A reflected Cross-Site Scripting (XSS) flaw was found in RESTEasy in all versions of RESTEasy up to 4.6.0.Final, where it did not properly handle URL encoding when calling @javax.ws.rs.PathParam without any @Produces MediaType. This flaw allows an attacker to launch a reflected XSS attack. The highest threat from this vulnerability is to data confidentiality and integrity.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.jboss.resteasy:resteasy-bomMaven | <= 4.6.0.Final | — |
org.jboss.resteasy:resteasy-coreMaven | <= 4.6.0.Final | — |
Affected products
5- cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
- RESTEasy/RESTEasydescription
- ghsa-coords2 versions
<= 4.6.0.Final+ 1 more
- (no CPE)range: <= 4.6.0.Final
- (no CPE)range: <= 4.6.0.Final
Patches
Vulnerability mechanics
References
5- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor AdvisoryWEB
- github.com/advisories/GHSA-5h26-c766-g93vghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-20293ghsaADVISORY
- security.netapp.com/advisory/ntap-20210727-0005/nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20210727-0005ghsaWEB
News mentions
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