MantisBT LinkedCustomFields Cross-site Scripting vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The LinkedCustomFields plugin for MantisBT allows users to link values between two custom fields, creating linked drop-downs. Prior to version 2.0.1, cross-site scripting in the MantisBT LinkedCustomFields plugin allows Javascript execution, when a crafted Custom Field is linked via the plugin and displayed when reporting a new Issue or editing an existing one. This issue is fixed in version 2.0.1. As a workaround, one may utilize MantisBT's default Content Security Policy, which blocks script execution.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| mantisbt-plugins | LinkedCustomFields | before 2.0.1 | 2.0.1 | Patch available | CNA |
- LinkedCustomFields Vendormantisbt-plugins Affected before 2.0.1 Fixed in 2.0.1 Patch available CNA
Remediation
- Fix · CNA LinkedCustomFields (mantisbt-plugins) Fixed in 2.0.1
Timeline
- 2026-10-02 Threatist record created from CVE-2023-49802
- 2026-10-07 EPSS moved to the 50th–90th percentile
References
Patch 2
Advisory 1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences