Search criteria
5 vulnerabilities by tinyproxy_project
CVE-2026-31842 (GCVE-0-2026-31842)
Vulnerability from cvelistv5 – Published: 2026-04-07 11:17 – Updated: 2026-04-07 16:30
VLAI
Title
Tinyproxy HTTP request parsing desynchronization via case-sensitive Transfer-Encoding handling
Summary
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. By sending a request with Transfer-Encoding: Chunked, an unauthenticated remote attacker can cause Tinyproxy to misinterpret the request as having no body. In this state, Tinyproxy sets content_length.client to -1, skips pull_client_data_chunked(), forwards request headers upstream, and transitions into relay_connection() raw TCP forwarding while unread body data remains buffered. This leads to inconsistent request state between Tinyproxy and backend servers. RFC-compliant backends (e.g., Node.js, Nginx) will continue waiting for chunked body data, causing connections to hang indefinitely. This behavior enables application-level denial of service through backend worker exhaustion. Additionally, in deployments where Tinyproxy is used for request-body inspection, filtering, or security enforcement, the unread body may be forwarded without proper inspection, resulting in potential security control bypass.
Severity
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/tinyproxy/tinyproxy/issues/604 | issue-trackingtechnical-descriptionthird-party-advisory |
| https://github.com/tinyproxy/tinyproxy | product |
| https://datatracker.ietf.org/doc/html/rfc7230 | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Tinyproxy Project | Tinyproxy |
Affected:
0 , ≤ 1.11.3
(custom)
|
Credits
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CVE-2025-63938 (GCVE-0-2025-63938)
Vulnerability from cvelistv5 – Published: 2025-11-26 00:00 – Updated: 2025-11-26 16:45
VLAI
Summary
Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.
Severity
6.5 (Medium)
CWE
- n/a
Assigner
References
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CVE-2023-49606 (GCVE-0-2023-49606)
Vulnerability from cvelistv5 – Published: 2024-05-01 15:31 – Updated: 2025-11-04 17:13
VLAI
Summary
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.
Severity
9.8 (Critical)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
Credits
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CVE-2022-40468 (GCVE-0-2022-40468)
Vulnerability from cvelistv5 – Published: 2022-09-19 00:00 – Updated: 2025-11-04 16:09
VLAI
Summary
Potential leak of left-over heap data if custom error page templates containing special non-standard variables are used. Tinyproxy commit 84f203f and earlier use uninitialized buffers in process_request() function.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2017-11747 (GCVE-0-2017-11747)
Vulnerability from cvelistv5 – Published: 2017-07-30 16:00 – Updated: 2024-08-05 18:19
VLAI
Summary
main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for tinyproxy.pid modification before a root script executes a "kill `cat /run/tinyproxy/tinyproxy.pid`" command.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tinyproxy/tinyproxy/issues/106 | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
Date Public
2017-07-30 00:00
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