MantisBT: Authentication bypass for some passwords due to PHP type juggling

published 2025-11-03 12 mo ago modified 2026-10-19 20 d ago also EUVD-2025-37522 , GHSA-q747-c74m-69pr

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits: 0; none known

Mantis Bug Tracker (MantisBT) is an open source issue tracker. In versions 2.27.1 and below, when a user edits their profile to change their e-mail address, the system saves it without validating that it actually belongs to the user. This could result in storing an invalid email address, preventing the user from receiving system notifications. Notifications sent to another person's email address could lead to information disclosure. This issue is fixed in version 2.27.2.

Patch / fix

fixed in 2 links 1

packagist mantisbt/mantisbt 2.27.2
mantisbt mantisbt 2.27.2

github.com/mantisbt/mantisbt@21e9fbe commit

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 12 mo ago (2025-11-04)

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

mantisbt.org https://mantisbt.org/bugs/view.php?id=36005 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
GitHub	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	mantisbt/mantisbt	<2.27.2	2.27.2

Affected products

mantisbt mantisbt

Classification

Weakness

CWE-201 Insertion of Sensitive Information Into Sent Data
CWE-354 Improper Validation of Integrity Check Value
CWE-345 Insufficient Verification of Data Authenticity

References

github.com /mantisbt/mantisbt/commit/21e9fbedde8553c29c0d3156e84f78157fc4f22e
web, patch
mantisbt.org /bugs/view.php?id=36005
web, exploit, issue-tracking, vendor-advisory
github.com /mantisbt/mantisbt/security/advisories/GHSA-q747-c74m-69pr
web, issue-tracking, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2025-55155
advisory
github.com /mantisbt/mantisbt
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary