CVE-2023-49606

Name: CVE-2023-49606
Creator: NVD / NIST
Published: 2024-05-01T16:15:07.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 63.08%

Last modified Jun 17, 2026

CVE-2023-49606 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 63.08% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

63.08%

99.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Tinyproxy Project	Tinyproxy	1.10.0
Tinyproxy Project	Tinyproxy	1.11.1

References

http://www.openwall.com/lists/oss-security/2024/05/07/1Exploit, Issue Tracking, Mailing List, Patch, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1889Exploit, Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/05/07/1Exploit, Issue Tracking, Mailing List, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00035.html
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1889Exploit, Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1889

Timeline

Published: May 1, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-49606?

How severe is CVE-2023-49606?

CVE-2023-49606 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 63.08% probability of exploitation in the next 30 days.

How do I fix CVE-2023-49606?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-49606?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST