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VulnerabilityPublished

CVE-2026-46688: meeting-room-booking-system mrbs-code · Open Redirect

Affects meeting-room-booking-system mrbs-codeSource CVE Database V5

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Not known to be exploited · CVSS 6.9 Medium : upgrade to 1.12.2 when convenient.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.12.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade mrbs-code and meeting-room-booking-system/mrbs-code to 1.12.2.

Affected software

ProductAffectedFixed in
meeting-room-booking-systemmrbs-codeAffected
  • <1.12.2
Fixed in
  • 1.12.2
GitHubmeeting-room-booking-system/mrbs-codepkg:github/meeting-room-booking-system/mrbs-codeOther threatsAffected
  • <1.12.2
Fixed in
  • 1.12.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade MRBS installations to version 1.12.2 or later, which contains the official fix for this open redirect vulnerability. No known workarounds are available, so patching is the recommended remediation.

Description

The Meeting Room Booking System (MRBS) is a PHP-based application for booking meeting rooms. Prior to version 1.12.2, an unauthenticated request can be made to redirect the user to a query-specified location. This allows an attacker to create a specially-crafted URL to an MRBS installation that will cause the user who clicks it to be redirected to the attacker-specified redirect URL, which could be a spoofed MRBS login page, for example. Version 1.12.2 contains a fix. No known workarounds are available.

References

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