CVEvulnerability

CVE-2026-31842

8.7 HIGH Published 2026-04-07 Modified 2026-08-10 Official page ↗
Status
Modified
Published
2026-04-07
Last modified
2026-08-10
Assigner
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
CVSS 4.0 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
8.7 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-444

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.

Affected configurations

• tinyproxy project tinyproxy (<= 1.11.3)

Related

Weakness · CWE (1)

  • CWE-444 Inconsistent Interpretation of HTTP Requests weakness

References