CVE-2026-93574

6.5 MEDIUM 2% exploit odds No fix listed Other

What it is

A flaw was found in Netty's `netty-codec-http` component. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP/1.1 chunk-size token that includes post-digit whitespace. This incorrect parsing of the chunk size can lead to HTTP request smuggling. This allows an attacker to bypass security controls or access unauthorized resources in proxy/backend deployments.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 1.7% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-09-18 10:31 UTC ReservedThe CVE id was reserved by its CNA
2026-09-18 21:18 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-06 18:18 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.7% in the next 30 days (EPSS).
Severity: 6.5 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2026-09-18 21:18 UTC
Last modified: 2026-11-06 18:18 UTC
Exploit probability: 1.7% · EPSS, next 30 days
Weakness: CWE-444
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 6.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: Low

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-93574.md and follow it. Check whether this project is affected by CVE-2026-93574. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record