Medium severity · published Feb 22, 2021
CVE-2020-35571
An issue was discovered in MantisBT through 2.24.3
6.1
CVSS
0.7%
EPSS
No
On KEV
Description
An issue was discovered in MantisBT through 2.24.3. In the helper_ensure_confirmed call in manage_custom_field_update.php, the custom field name is not sanitized. This may be problematic depending on CSP settings.
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)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mantisbt · Mantisbt
through 2.24.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35571
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35571
Vendor Advisory
https://mantisbt.org/bugs/view.php?id=27768
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