CVE-2026-40562

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Source

https://cve.org/CVERecord?id=CVE-2026-40562

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40562.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-40562

Downstream

MGASA-2026-0130

Published

2026-05-06T12:36:34.715Z

Modified

2026-07-15T01:48:53.798675034Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator

Summary

Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence

Details

Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence.

Gazelle incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence.

An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.

Database specific

{
    "cwe_ids": [
        "CWE-444"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40562.json",
    "cna_assigner": "CPANSec"
}

References

Affected packages

Git / github.com/kazeburo/gazelle

Affected ranges

Type

GIT

Repo

https://github.com/kazeburo/gazelle

Events

Introduced

Last affected

ddf258777dbb2e75ce3a04fe3edc31768dabc48a

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.49"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.11

0.12

0.20

0.21

0.22

0.23

0.25

0.30

0.31

0.32

0.33

0.34

0.35

0.36

0.37

0.38

0.39

0.40

0.41

0.42

0.43

0.44

0.45

0.46

0.47

0.48

0.49

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40562.json"