5.3

CVE-2024-9622: Resteasy-netty4-cdi: resteasy-netty4: resteasy-reactor-netty: http request smuggling leading to client timeouts in resteasy-netty4

Deferred
AliasesUBUNTU-CVE-2024-9622GHSA-5wpr-cj9p-959r
Published 08-10-2024Last modified 21-11-2025

Vulnerability summary

CVE-2024-9622 is a medium (CVSS 5.3) vulnerability in resteasy. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 51.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.65%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
USN-7351-1USN-7630-1

Timeline

  1. 08-10-2024
    PublishedVulnerability first disclosed.
  2. 21-11-2025
    Last modifiedVulnerability information updated.

Description

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BAD_MESSAGE state. As a result, any subsequent legitimate requests on the same connection are ignored, leading to client timeouts, which may impact systems using load balancers and expose them to risk.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.65%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.65% on 05-10-2026

05-10-202604-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu2 products
  • resteasy< 3.0.6-3ubuntu0.1~esm1 | < 3.6.2-2ubuntu0.20.04.1~esm1 | < 3.6.2-2ubuntu0.22.04.1~esm1 | < 3.6.2-2ubuntu0.24.04.1~esm1 | All versions (No fix recorded)
  • resteasy3.0< 3.0.26-1~18.04.1~esm1 | < 3.0.26-1ubuntu0.1~esm1 | < 3.0.26-3ubuntu0.1 | < 3.0.26-6ubuntu0.24.04.1 | All versions (No fix recorded)
Org.jboss.resteasy1 product
  • resteasy-netty4-cdiAll versions (No fix recorded)

2 vendors · 3 products

References

9 links