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VULNERABILITIES

CVE-2026-31842 Details

Description

Tinyproxy through 1.11.3 is vulnerable to HTTP request parsing desynchronization due to a case-sensitive comparison of the Transfer-Encoding header in src/reqs.c. The is_chunked_transfer function uses strcmp to compare the header value against "chunked", even though RFC 7230 specifies that transfer-coding names are case-insensitive.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: TuranSecCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://datatracker.ietf.org/doc/html/rfc7230 TuranSecExploitTechnical Description
https://github.com/tinyproxy/tinyproxy TuranSecProduct
https://github.com/tinyproxy/tinyproxy/issues/604 TuranSecExploitIssue Tracking

Weakness Enumeration

CWE-IDCWE NameSource
CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')TuranSec

Affected Products

ProductVersions
tinyproxy project tinyproxy
<= 1.11.3

CPE

  • cpe:2.3:a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-31842
NVD Published Date:
Apr 7, 2026
NVD Last Modified:
Aug 10, 2026
Source:
TuranSec
CVE-2026-31842 Details - Not Deferred