EUVD-2026-31192
GHSA-qj6w-v29q-4rgx
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
1DescriptionGitHub Advisory
Improper escaping of a textarea custom field's contents in the Update Issue page (bug_update_page.php) allows an attacker to inject HTML and, if CSP settings permit, execute arbitrary JavaScript when the page is loaded.
Impact
Session theft leading to admin account takeover, full project data access.
- Precondition: A textarea-type custom field must be configured for the project
- Attacker: Authenticated user with bug report permission (low privilege)
- Victim: Any user viewing the bug edit form, including administrators
Patches
- 5fec0f448b7a7d7d539a6adb6dccceac4e4e4ab7
Workarounds
The default Content-Security Policy will block script execution.
References
- https://mantisbt.org/bugs/view.php?id=37003
- This is related to CVE-2024-34081.
Credits
Thanks to the following security researchers for independently discovering and responsibly reporting the issue, and providing a patch to fix it.
- Thanks to Nozomu Sasaki (Paul) (@morimori-dev)
- Tristan Madani (@TristanInSec) from Talence Security
Analysis
Improper escaping of a textarea custom field's contents in the Update Issue page (bug_update_page.php) allows an attacker to inject HTML and, if CSP settings permit, execute arbitrary JavaScript when the page is loaded.
Impact
Session theft leading to admin account takeover, full project data access.
- Precondition: A textarea-type custom field must be configured for the project
- Attacker: Authenticated user with bug report permission (low privilege)
- Victim: Any user viewing the bug edit form, including administrators
Patches
- 5fec0f448b7a7d7d539a6adb6dccceac4e4e4ab7
Workarounds
The default Content-Security Policy will block script execution.
References
- https://mantisbt.org/bugs/view.php?id=37003
- This is related to CVE-2024-34081.
Credits
Thanks to the following security researchers for independently discovering and responsibly reporting the issue, and providing a patch to fix it.
- Thanks to Nozomu Sasaki (Paul) (@morimori-dev)
- Tristan Madani (@TristanInSec) from Talence Security
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External POC / Exploit Code
Leaving vuln.today