CVE-2026-129134
MRBS before 1.13.0 Password Reset Poisoning via Host Header Injection
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
MRBS before 1.13.0 contains a password reset poisoning vulnerability that allows unauthenticated attackers to redirect reset links by forging the Host header when $url_base is unset. Attackers can request a reset for a victim so AuthDb::notifyUser() emails a link pointing to their host, capturing the reset key when opened to take over accounts including administrators.
| CWE | CWE-640 |
| Vendor | meeting-room-booking-system |
| Product | mrbs-code |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
meeting-room-booking-system / mrbs-code
0 < 1.13.0
References
github.com: https://github.com/meeting-room-booking-system/mrbs-code/security/advisories/GHSA-73cv-hx7f-9v27 github.com: https://github.com/meeting-room-booking-system/mrbs-code/commit/92f6f5610072ddb9e1b38074c410fc8be56947ed github.com: https://github.com/meeting-room-booking-system/mrbs-code/releases/tag/v1.13.0 github.com: https://github.com/meeting-room-booking-system/mrbs-code/blob/299686ed64174a66448699f5ca0fb5e0e0ea9faa/web/lib/MRBS/Auth/AuthDb.php#L613 vulncheck.com: https://www.vulncheck.com/advisories/mrbs-before-1.13.0-password-reset-poisoning-via-host-header-injection
Credits
leediay153 from Viettel Post John Beranek