CVE-2026-46688Network attack vector

Unauthenticated phishing redirects via query-supplied destinations

Published Aug 12, 2026 · Updated Aug 12, 2026

Open redirect in MRBS kiosk mode before 1.12.2 allows remote attackers to send users to attacker-controlled sites via crafted links. The kiosk-mode redirect handler places a query-supplied destination into an HTTP redirect without restricting it to a trusted site. Exploitation requires a user to follow the crafted MRBS URL, after which the browser reaches an attacker-controlled page that can impersonate the MRBS login.

CVSS severity6.9
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in MRBS kiosk mode before 1.12.2 allows remote attackers to send users to attacker-controlled sites via crafted links. The kiosk-mode redirect handler places a query-supplied destination into an HTTP redirect without restricting it to a trusted site. Exploitation requires a user to follow the crafted MRBS URL, after which the browser reaches an attacker-controlled page that can impersonate the MRBS login.

The record

CVE
CVE-2026-46688
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
Meeting Room Booking System
Product
MRBS
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.12.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Meeting Room Booking System · MRBSversion=< 1.12.2

Published CVSS scores

6.9GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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