CVE-2026-3945tinyproxy Integer Overflow in HTTP Chunked Transfer-Encoding Parser Leading to Denial of Service
Updated under an hour ago ()
Does this affect you?
It affects tinyproxy. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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).
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-190
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- TuranSec
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
tinyproxy tinyproxy tinyproxy:tinyproxy (from the name) | through 1.11.3 | CNA record |
References
- https://github.com/tinyproxy/tinyproxy/issues/602issue-tracking, technical-description
- https://github.com/tinyproxy/tinyproxy/pull/603patch
- https://github.com/tinyproxy/tinyproxy/commit/969852cpatch
- https://github.com/tinyproxy/tinyproxy/commit/bb7edc4patch
- https://github.com/tinyproxy/tinyproxy/releasesrelease-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.