CVE-2023-49606

CRITICAL
Published May 1, 2024 Modified Nov 4, 2025 CWE-416

Description

A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy 1.10.0. A specially crafted HTTP header can trigger reuse of previously freed memory, which leads to memory corruption and could lead to remote code execution. An attacker needs to make an unauthenticated HTTP request to trigger this vulnerability.

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CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor Product
tinyproxy_project tinyproxy
tinyproxy_project tinyproxy

References

Frequently Asked Questions

What is CVE-2023-49606? +
A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy 1.10.0. A specially crafted HTTP header can trigger reuse of previously freed memory, which leads to memory corruption and could lead to remote code execution. An attacker needs to make an unauthenticated HTTP request to trigger this vulnerability. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2023-49606? +
CVE-2023-49606 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2023-49606? +
CVE-2023-49606 affects products from tinyproxy_project, specifically: tinyproxy. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-49606? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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