Mantis Bug Tracker (MantisBT) is an open source issue tracker. Due to incorrect use of loose (==) instead of strict (===) comparison in the authentication code in versions 2.27.1 and below.PHP type juggling will cause certain MD5 hashes matching scientific notation to be interpreted as numbers. Instances using the MD5 login method allow an attacker who knows the victim's username and has access to an account with a password hash that evaluates to zero to log in without knowing the victim's actual password, by using any other password with a hash that also evaluates to zero This issue is fixed in version 2.27.2.
CVE-2025-47776
This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 75% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.1
- EG Score
- 9.1(medium)
- EG Risk
- —
- EPSS
- 24.9%
- KEV
- Not listed
Published
November 4, 2025
Last Modified
November 10, 2025
Advisory Details (2)
Auto-updated Jul 20, 2026Authentication bypass for some passwords due to PHP type juggling · Advisory · mantisbt/mantisbt · GitHub
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-4v8w-gg5j-ph37commit 966554a19cf1 (mantisbt/mantisbt)
Fix landed in mantisbt/mantisbt commit 966554a19cf1 — awaiting tagged release
https://github.com/mantisbt/mantisbt/commit/966554a19cf1bdbcfbfb3004766979faa748f9a2Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| mantisbt/mantisbt | 2.10.0 ... 2.9.1 (72 versions) | 2.27.2 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 49× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
What is CVE-2025-47776?
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