Medium severity · published Oct 28, 2021
CVE-2021-36551
TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php
5.4
CVSS
0.5%
EPSS
No
On KEV
Description
TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload under the Add Event module.
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)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
Tikiwiki Cms/groupware · Tiki
21.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36551
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36551
Exploit
https://github.com/r0ck3t1973/xss_payload/issues/7
More from Tikiwiki Cms/groupware
9.8
CVE-2025-34111
An unauthenticated arbitrary file upload vulnerability exists in Tiki Wiki CMS Groupware version 15.1 and earlier via the ELFinder component's default connector…
9.8
CVE-2010-4239
Tiki Wiki CMS Groupware 5.2 has Local File Inclusion
9.8
CVE-2012-0911
TikiWiki CMS/Groupware before 6.7 LTS and before 8.4 allows remote attackers to execute arbitrary PHP code via a crafted serialized object in the (1) cookieName to…
8.8
CVE-2020-29254
TikiWiki 21.2 allows templates to be edited without CSRF protection
8.8
CVE-2010-4241
Tiki Wiki CMS Groupware 5.2 has CSRF