CVE-2026-66074— RabbitMQ: ReDoS via management API ?name= filter
Quick assessment
Affected
rabbitmq rabbitmq-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
RabbitMQ 是一个消息和流式代理系统。在 3.13.15、4.0.20、4.1.11、4.2.6 和 4.3.0 版本之前， 函数会将用户提供的 正则表达式传递给 ，且未设置 选项，并对结果集中的每个资源执行一次该正则表达式。OTP 默认的 为 10M，每次调用大约消耗 100-200 毫秒，但由于对结果集中的每个资源都会单独执行一次正则表达式，当结果集较大时（例如包含 5000 个队列，每个队列耗时 150 毫秒），单个请求将消耗超过 12 分钟的 CPU 时间。并行请求会导致调度器饱和。 是列表端点的一个
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I. Basic Information for CVE-2026-66074
Vulnerability Information
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Vulnerability Title
RabbitMQ: ReDoS via management API ?name= filter
Source: CVE Program / CVE List V5
Vulnerability Description
RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, match_value/3 passes the user-supplied ?name= regular expression to re:run with no match_limit option, and executes it once per resource in the result set. OTP's default 10M match_limit caps each call at roughly 100-200ms, but the regex runs once per resource in the result set. With a large set, for example 5000 queues at 150ms each, a single request consumes 12 or more minutes of CPU. Parallel requests saturate the schedulers. The use_regex=true option is a supported feature on list endpoints, so this path is reachable through normal API use. Preconditions include Any user with the management tag can exploit this.. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| rabbitmq | rabbitmq-server | >= 3.13.0, < 3.13.15 | - |
|
II. Public POCs for CVE-2026-66074
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-66074 (1)
Other References for CVE-2026-66074 (2)
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Release RabbitMQ 4.3.0 · rabbitmq/rabbitmq-server · GitHub x_refsource_MISC
Same Patch Batch · rabbitmq · 2026-09-23 · 25 CVEs total
| CVE-2026-67404 | 9.2 CRITICAL | RabbitMQ: OAuth2 silent verify_none fallback for JWKS fetch |
| CVE-2026-67231 | 9.1 CRITICAL | RabbitMQ: Trust-store whitelist by Issuer+Serial only |
| CVE-2026-66079 | 8.2 HIGH | RabbitMQ: Pre-auth AMQP 1.0 array32 zero-width element DoS |
| CVE-2026-67232 | 8.2 HIGH | RabbitMQ: Web-MQTT decompression bomb |
| CVE-2026-66070 | 7.6 HIGH | RabbitMQ: CORS * reflects Origin with Allow-Credentials |
| CVE-2026-66077 | 7.3 HIGH | RabbitMQ: Stored XSS via TLS peer-certificate DN in management UI |
| CVE-2026-67235 | 7.1 HIGH | RabbitMQ: AMQP 0-9-1 body assembly never validates accumulated size |
| CVE-2026-67238 | 7.1 HIGH | RabbitMQ: Atom-table exhaustion via reply-to queue name decoding |
| CVE-2026-67228 | 6.9 MEDIUM | RabbitMQ: Atom exhaustion: to_atom on runtime-parameter component |
| CVE-2026-67229 | 6.9 MEDIUM | RabbitMQ: Admin-only atom exhaustion: atomize_keys on vhost metadata |
| CVE-2026-67219 | 6.0 MEDIUM | RabbitMQ: Consistent-hash exchange unbounded weight |
| CVE-2026-67220 | 6.0 MEDIUM | RabbitMQ: JMS topic exchange erl_scan atom exhaustion |
| CVE-2026-66067 | 6.0 MEDIUM | RabbitMQ: Stream protocol skips per vhost per user connection limits |
| CVE-2026-66072 | 6.0 MEDIUM | RabbitMQ: Atom table exhaustion via stream `chunk_selector` |
| CVE-2026-66080 | 5.9 MEDIUM | RabbitMQ: Super-stream partitions unbounded allocation |
| CVE-2026-67221 | 5.9 MEDIUM | RabbitMQ: AMQP 1.0 shovel status exposes plaintext URI passwords |
| CVE-2026-66068 | 5.6 MEDIUM | RabbitMQ: Shovel DEBUG log of full state exposes decrypted URIs |
| CVE-2026-67405 | 5.3 MEDIUM | RabbitMQ: CSWSH on Web-STOMP / Web-MQTT (no Origin validation) |
| CVE-2026-66069 | 2.3 LOW | RabbitMQ: Monitoring-tag DELETE of auth-attempt metrics |
| CVE-2026-66076 | 2.3 LOW | RabbitMQ: Cross-vhost quorum-queue status and stream tracking disclosure |
Showing top 20 of 25 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: rabbitmq-server
-
CVE-2026-67420
RabbitMQ OAuth credential refresh retains revoked runtime ta -
CVE-2026-67419
RabbitMQ: Consecutive topic wildcards cause combinatorial ro -
CVE-2026-67421
RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth -
CVE-2026-67408
RabbitMQ: Stream Management Super-Stream Binding Keys Alloca -
CVE-2026-67406
RabbitMQ: Federation and Shovel Gen-Servers Lack format_stat
Same vendor: rabbitmq
-
CVE-2026-67420
RabbitMQ OAuth credential refresh retains revoked runtime ta -
CVE-2026-67419
RabbitMQ: Consecutive topic wildcards cause combinatorial ro -
CVE-2026-67421
RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth -
CVE-2026-67408
RabbitMQ: Stream Management Super-Stream Binding Keys Alloca -
CVE-2026-67406
RabbitMQ: Federation and Shovel Gen-Servers Lack format_stat
Same weakness: CWE-1333
-
CVE-2026-67413
RabbitMQ: Authenticated RabbitMQ JMS Topic Selector Users Ca -
CVE-2026-54461
Habitica: Regex Injection / ReDoS in Member Search -
CVE-2026-67240
RabbitMQ: ReDoS via AMQP 1.0 SQL filter LIKE wildcard -
CVE-2026-77423
JLine: ReDoS in Built-in Less Viewer Search -
CVE-2026-77420
JLine: ReDoS via `HISTORY_IGNORE` Configuration Variable
V. Comments for CVE-2026-66074
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