Medium severity · published Jan 23, 2023
CVE-2021-24837
Passster < 3.5.5.8 - Contributor+ Stored Cross-Site Scripting
5.4
CVSS
0.4%
EPSS
No
On KEV
Description
The Passster WordPress plugin before 3.5.5.8 does not escape the area parameter of its shortcode, which could allow users with a role as low as Contributor to perform Cross-Site Scripting attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
Passster ·
before 3.5.5.8 · source: vendor
PA
Passter · Passster Project
before 3.5.5.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-24837
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-24837
Third Party Advisory
https://wpscan.com/vulnerability/5fea3ac3-d599-41f3-8f76-08f0d3552af1
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