Search criteria
14 vulnerabilities found for tinyproxy by tinyproxy_project
CVE-2026-31842 (GCVE-0-2026-31842)
Vulnerability from nvd – 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 nvd – 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 nvd – 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 nvd – 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 nvd – 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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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)
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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
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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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FKIE_CVE-2025-63938
Vulnerability from fkie_nvd - Published: 2025-11-26 17:15 - Updated: 2026-01-02 20:48
Severity
Summary
Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://github.com/rayinaw/my-hub/blob/main/CVE-2025-63938/DISCLOSURE.md | Third Party Advisory | |
| cve@mitre.org | https://github.com/tinyproxy/tinyproxy/commit/3c0fde94981b025271ffa1788ae425257841bf5a | Patch | |
| cve@mitre.org | https://github.com/tinyproxy/tinyproxy/issues/586 | Exploit, Issue Tracking, Patch |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| tinyproxy_project | tinyproxy | * |
{
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FKIE_CVE-2023-49606
Vulnerability from fkie_nvd - Published: 2024-05-01 16:15 - Updated: 2025-11-04 18:15
Severity
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.
References
| URL | Tags | ||
|---|---|---|---|
| talos-cna@cisco.com | http://www.openwall.com/lists/oss-security/2024/05/07/1 | Exploit, Issue Tracking, Mailing List, Patch, Third Party Advisory | |
| talos-cna@cisco.com | https://talosintelligence.com/vulnerability_reports/TALOS-2023-1889 | Exploit, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | http://www.openwall.com/lists/oss-security/2024/05/07/1 | Exploit, Issue Tracking, Mailing List, Patch, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://lists.debian.org/debian-lts-announce/2024/09/msg00035.html | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://talosintelligence.com/vulnerability_reports/TALOS-2023-1889 | Exploit, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1889 |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| tinyproxy_project | tinyproxy | 1.10.0 | |
| tinyproxy_project | tinyproxy | 1.11.1 |
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"value": "Existe una vulnerabilidad de use-after-free en el an\u00e1lisis de los encabezados de conexi\u00f3n HTTP en Tinyproxy 1.11.1 y Tinyproxy 1.10.0. Un encabezado HTTP especialmente manipulado puede provocar la reutilizaci\u00f3n de la memoria previamente liberada, lo que provoca da\u00f1os en la memoria y podr\u00eda provocar la ejecuci\u00f3n remota de c\u00f3digo. Un atacante necesita realizar una solicitud HTTP no autenticada para activar esta vulnerabilidad."
}
],
"id": "CVE-2023-49606",
"lastModified": "2025-11-04T18:15:44.593",
"metrics": {
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]
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FKIE_CVE-2022-40468
Vulnerability from fkie_nvd - Published: 2022-09-19 17:15 - Updated: 2025-11-04 16:15
Severity
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| tinyproxy_project | tinyproxy | * |
{
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"lang": "es",
"value": "Posible fuga de datos sobrantes de la pila si se utilizan plantillas de p\u00e1ginas de error personalizadas que contienen variables especiales no est\u00e1ndar. El commit 84f203f de Tinyproxy y los anteriores utilizan b\u00faferes no inicializados en la funci\u00f3n process_request()"
}
],
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"lastModified": "2025-11-04T16:15:52.090",
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},
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"url": "https://github.com/tinyproxy/tinyproxy/issues/457"
},
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"url": "https://github.com/tinyproxy/tinyproxy/issues/457#issuecomment-1264176815"
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"url": "https://security.gentoo.org/glsa/202305-27"
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FKIE_CVE-2017-11747
Vulnerability from fkie_nvd - Published: 2017-07-30 16:29 - Updated: 2026-05-13 00:24
Severity
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.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://github.com/tinyproxy/tinyproxy/issues/106 | Issue Tracking, Patch, Third Party Advisory | |
| cve@mitre.org | https://lists.debian.org/debian-lts-announce/2020/03/msg00037.html | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/tinyproxy/tinyproxy/issues/106 | Issue Tracking, Patch, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://lists.debian.org/debian-lts-announce/2020/03/msg00037.html |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| tinyproxy_project | tinyproxy | * |
{
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{
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}
],
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]
}
],
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},
{
"lang": "es",
"value": "El archivo main.c en Tinyproxy versi\u00f3n 1.8.4 y anteriores, crea un archivo /run/tinyproxy/tinyproxy.pid despu\u00e9s de quitar los privilegios a una cuenta no root, lo que podr\u00eda permitir a los usuarios locales eliminar procesos arbitrarios mediante el aprovechamiento del acceso a esta cuenta no root para la modificaci\u00f3n de Tinyproxy.pid antes de que un script root ejecute el comando \"kill` cat/run/tinyproxy/tinyproxy.pid`\"."
}
],
"id": "CVE-2017-11747",
"lastModified": "2026-05-13T00:24:29.033",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 2.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-07-30T16:29:00.250",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/tinyproxy/tinyproxy/issues/106"
},
{
"source": "cve@mitre.org",
"url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00037.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/tinyproxy/tinyproxy/issues/106"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00037.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-269"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}