CVE-2026-57211 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-57211CRITICAL

RabbitMQ: UNC SSRF affecting the management UI on Windows

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  C  H  H  H   10.0   .0043   35.9     —

AFFECTED
  Product          Versions             Fixed
  rabbitmq-server  >= 4.2.0, < 4.2.6 –  —

TIMELINE
  Jun 24  Reserved by GitHub_M
  Jul 10  EXPLOIT PUBLISHED — CVE-2026-57211 (rabbitmq-server). Public exploit reference added.
  Jul 10  Published (CNA: GitHub_M)

CWE-36, CWE-918 · CNA: GitHub_M · CVSS v3.1 · 5 references · NVD status: Analyzed

Description

RabbitMQ is a messaging and streaming broker. Prior to 4.1.11 and 4.2.6 on Windows, the RabbitMQ management plugin static file handler rabbit_mgmt_wm_static can pass URL-encoded backslashes to erl_prim_loader:read_file_info before path validation when multiple management extension plugins are enabled, causing outbound DNS and SMB requests to attacker-controlled UNC paths. This issue is fixed in versions 4.1.11 and 4.2.6.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 24, 2026	Reserved	Reserved by GitHub_M
July 10, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-57211 (rabbitmq-server). Public exploit reference added.
July 10, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
rabbitmq	rabbitmq-server	—	>= 4.2.0, < 4.2.6	—

Weaknesses

CWE-36 · CWE-918

References (5)

https://github.com/rabbitmq/rabbitmq-server/commit/39c3a8e9c71da0403d8dfc13f700e60c936e3682 [Patch]
https://github.com/rabbitmq/rabbitmq-server/commit/6730797f6a34b4e8308cea60adf1243857e70204 [Patch]
https://github.com/rabbitmq/rabbitmq-server/pull/15803 [Issue Tracking, Patch]
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 [Release Notes]
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-57211 at cve.org

Vendors: rabbitmq

Weaknesses: CWE-36 · CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-57211 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.