CVE-2026-46382
MRBS SSRF lets attacker force server to fetch attacker-controlled local/private URIs
Is CVE-2026-46382 being exploited?
Not confirmed. CVE-2026-46382 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-46382?
CVE-2026-46382 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-46382?
Yes. A fix has been recorded for CVE-2026-46382. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-46382 affect?
CVE-2026-46382 affects Meeting Room Booking System (MRBS) < 1.12.2, PHP web servers hosting MRBS. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-46382?
Upgrade MRBS to 1.12.2; restrict outbound requests and apply egress network ACLs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
SSRF: attacker can make MRBS fetch internal/private URIs, exposing internal APIs, metadata, or services; may enable data access or lateral movement.
Patch when possible
- affected< 1.12.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.