Medium severity · published Aug 12, 2020
CVE-2020-16266
An XSS issue was discovered in MantisBT before 2.24.2
5.4
CVSS
1.2%
EPSS
No
On KEV
Description
An XSS issue was discovered in MantisBT before 2.24.2. Improper escaping on view_all_bug_page.php allows a remote attacker to inject arbitrary HTML into the page by saving it into a text Custom Field, leading to possible code execution in the browser of any user subsequently viewing the issue (if CSP settings allow it).
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)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mantisbt · Mantisbt
before 2.24.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-16266
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-16266
Release Notes
https://mantisbt.org/blog/archives/mantisbt/665
Exploit
https://mantisbt.org/bugs/view.php?id=27056
More from Mantisbt
9.8
CVE-2026-30849
MantisBT SOAP API has an authentication bypass vulnerability on MySQL
9.6
CVE-2019-15074
The Timeline feature in my_view_page.php in MantisBT through 2.21.1 has a stored cross-site scripting (XSS) vulnerability, allowing execution of arbitrary code (if CSP settings…
9.3
CVE-2026-47156
MantisBT: SOAP API Authentication Bypass with Privilege Escalation to Administrator
9.1
CVE-2025-47776
MantisBT: Authentication bypass for some passwords due to PHP type juggling
8.8
CVE-2017-7615
MantisBT through 2.3.0 allows arbitrary password reset and unauthenticated admin access via an empty confirm_hash value to verify.php