Medium severity · published Jun 10, 2021
CVE-2021-20293
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…
6.1
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OI
Oncommand Insight · Netapp
All versions, or not specified · source: NVD
RE
Resteasy · Redhat
through 4.6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20293
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20293
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1942819
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210727-0005/
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