TI-2026-41149 Aliases CVE-2026-57211

RabbitMQ: UNC SSRF affecting the management UI on Windows

HIGH 76CWE-36Published 2026-07-10 · Updated 2026-07-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00631 50th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed rabbitmq-server (rabbitmq): 4.2.6, 4.1.11Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
rabbitmq	rabbitmq-server	4.2.0 to before 4.2.6; 4.1.0 to before 4.1.11	4.2.6, 4.1.11	Patch available	CNA

rabbitmq-server Vendorrabbitmq Affected 4.2.0 to before 4.2.6; 4.1.0 to before 4.1.11 Fixed in 4.2.6, 4.1.11 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:broadcom:rabbitmq_server::::::::	4.1.0 to before 4.2.6	Vulnerable	Broadcom
cpe:2.3:o:microsoft:windows:-:::::::*	not specified by NVD	Running on	Microsoft

cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:* Versions 4.1.0 to before 4.2.6 Vulnerable ·Broadcom
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

Fix · CNA rabbitmq-server (rabbitmq) Fixed in 4.2.6, 4.1.11

Red Hat 2 advisories

RHSA-2026:35940 Released 2026-07-06 · Red Hat rating Important
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images rabbitmq-server4-2-main@aarch64, rabbitmq-server4-2-main@src, rabbitmq-server4-2-main@x86_64
RHSA-2026:35939 Released 2026-07-06 · Red Hat rating Important
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images rabbitmq-server4-3-main@aarch64, rabbitmq-server4-3-main@src, rabbitmq-server4-3-main@x86_64

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Hardened Images	Fixed	RHSA-2026:35939, RHSA-2026:35940

Not affected: 3 products

Red Hat OpenStack Platform 16.2
Red Hat OpenStack Platform 17.1
Red Hat OpenStack Platform 18.0

Timeline

2026-10-02 Threatist record created from CVE-2026-57211
2026-10-27 EPSS moved to the 50th–90th percentile

References

Exploit 1

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6

Patch 3

Other 1

https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6

TI-2026-41154 Improper authentication in rabbitmq-server CVSS 3.1CRITICAL 10.0
TI-2026-41158 Resource allocation without limits in rabbitmq-server CVSS 3.1HIGH 7.5
TI-2026-47695 RabbitMQ: OAuth2 Client Secret Exposed via Unauthenticated JavaScript Endpoint CVSS 4.0HIGH 8.2
TI-2026-47694 RabbitMQ: JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Authentication DoS CVSS 4.0HIGH 8.2
TI-2026-45167 RabbitMQ Java client: Unvalidated Class.forName in JSON-RPC ProcedureDescription enables arbitrary class loading CVSS 4.0HIGH 7.5
TI-2026-47558 RabbitMQ: OAuth2 is_integer(Exp) guard skips token-expiry checks for float exp CVSS 4.0MEDIUM 6.3

See all 100 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences