CVE-2023-34054 json
Reactor Netty HTTP Server Metrics DoS Vulnerability
published 2023-11-28 2 y ago modified 2026-09-04 2 mo ago also GHSA-q24v-hpg3-v3jp , EUVD-2023-3013
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.
Specifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.
Patch / fix
- maven io.projectreactor.netty:reactor-netty-core 1.0.39, 1.1.13
- Spring Reactor Netty 1.0.39, 1.1.13
Exploit prediction
0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | io.projectreactor.netty:reactor-netty-core | >=1.1.0, <1.1.13 >=1.0.0, <1.0.39 |
1.1.13 1.0.39 |
Affected products
- Spring Reactor Netty
References
-
github.com
/reactor/reactor-netty/commit/37dc8a2ef6514cd7834e75e7f3faf0b9ea044c88
web
-
github.com
/reactor/reactor-netty/commit/4ddbb1b9b985bb72290110ebae468a54e7f19420
web
-
github.com
/reactor/reactor-netty/commit/ae82154e99e6f51f4816effd135f0c3a966d6ea3
web
-
spring.io
/security/cve-2023-34054
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-34054
advisory
-
github.com
/reactor/reactor-netty
package
-
github.com
/reactor/reactor-netty/releases/tag/v1.0.39
web
-
github.com
/reactor/reactor-netty/releases/tag/v1.1.13
web
Sources
- CVE List CVE-2023-34054
- GitHub Advisory GHSA-q24v-hpg3-v3jp
- NVD CVE-2023-34054
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.