CVE-2026-3945

EUVD-2026-17066
An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). The issue occurs because chunk size values are parsed using strtol without properly validating overflow conditions (e.g., errno == ERANGE).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
TuranSecCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 44.63%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
tinyproxy_projecttinyproxy
𝑥
≤ 1.11.3
CNA
Debian logo
Debian Releases
Debian Product
Codename
tinyproxy
bookworm
no-dsa
bookworm (security)
vulnerable
bullseye
postponed
bullseye (security)
vulnerable
forky
vulnerable
sid
vulnerable
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
tinyproxy
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
trusty
needs-triage
xenial
ignored