CVE-2026-67181

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Source
https://cve.org/CVERecord?id=CVE-2026-67181
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67181.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-67181
Downstream
Related
Published
2026-07-28T16:10:29.527Z
Modified
2026-08-16T11:56:57.248611549Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
Rouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Transfer-Encoding Header
Details

Rouille 0.3.3 through 3.6.2 contains an HTTP request smuggling vulnerability that allows remote attackers to desynchronize HTTP message boundaries by exploiting improper header forwarding in the proxy implementation. The proxy in src/proxy.rs forwards the client's Transfer-Encoding header to upstream backends unchanged while transmitting a body already de-chunked by tiny_http, enabling CL.TE desynchronization attacks where attackers control where the backend believes the request body ends.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-444"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67181.json"
}
References

Affected packages

Git / github.com/tomaka/rouille

Affected ranges

Type
GIT
Repo
https://github.com/tomaka/rouille
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
536fa0eacaeef93168f3378a0296e3f99da7b3af
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.3.3"
        },
        {
            "last_affected": "3.6.2"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v3.*
v3.1.0
v3.1.1
v3.2.0
v3.2.1
v3.3.0
v3.3.1
v3.4.0
v3.5.0
v3.6.0
v3.6.1
v3.6.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67181.json"