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6 vulnerabilities by reactphp
CVE-2026-84997 (GCVE-0-2026-84997)
Vulnerability from nvd – Published: 2026-09-16 14:07 – Updated: 2026-09-16 14:46
VLAI
EPSS
VEX
Title
react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU
Summary
react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. From 0.6.0 until 1.11.1, React\Http\Io\ChunkedDecoder could enter an infinite loop while processing a malformed Transfer-Encoding: chunked body because handleData required its buffer to shrink on every iteration. An incomplete terminal-chunk trailer without CRLF left the buffer unchanged after strpos returned false, and exactly two non-CRLF bytes after a completed non-terminal chunk bypassed both the error and wait guards. The affected decoder processes request bodies for React\Http\HttpServer and response bodies for React\Http\Browser, allowing a malicious client to freeze a server or a malicious or compromised server to freeze a client. A reverse proxy that normalizes inbound requests may protect the server direction but does not protect outbound Browser requests. This issue is fixed in version 1.11.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 14:46 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/reactphp/http/security/advisor… | x_refsource_CONFIRM |
| https://github.com/reactphp/http/commit/b6d468879… | x_refsource_MISC |
| https://github.com/reactphp/http/releases/tag/v1.11.1 | x_refsource_MISC |
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CVE-2023-26044 (GCVE-0-2023-26044)
Vulnerability from nvd – Published: 2023-05-17 17:24 – Updated: 2025-01-23 19:52
VLAI
EPSS
VEX
Title
ReactPHP's HTTP server continues parsing unused multipart parts after reaching limits
Summary
react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. Previous versions of ReactPHP's HTTP server component contain a potential DoS vulnerability that can cause high CPU load when processing large HTTP request bodies. This vulnerability has little to no impact on the default configuration, but can be exploited when explicitly using the RequestBodyBufferMiddleware with very large settings. This might lead to consuming large amounts of CPU time for processing requests and significantly delay or slow down the processing of legitimate user requests. This issue has been addressed in release 1.9.0. Users are advised to upgrade. Users unable to upgrade may keep the request body limited using RequestBodyBufferMiddleware with a sensible value which should mitigate the issue. An infrastructure or DevOps workaround could be to place a reverse proxy in front of the ReactPHP HTTP server to filter out any excessive HTTP request bodies.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-23 19:51 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/reactphp/http/security/advisor… | x_refsource_CONFIRM |
| https://github.com/reactphp/http/commit/9681f764b… | x_refsource_MISC |
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CVE-2022-36032 (GCVE-0-2022-36032)
Vulnerability from nvd – Published: 2022-09-06 18:20 – Updated: 2025-04-23 17:14
VLAI
EPSS
VEX
Title
ReactPHP's HTTP server parses encoded cookie names so malicious `__Host-` and `__Secure-` cookies can be sent
Summary
ReactPHP HTTP is a streaming HTTP client and server implementation for ReactPHP. In ReactPHP's HTTP server component versions starting with 0.7.0 and prior to 1.7.0, when ReactPHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like `__Host-` and `__Secure-` confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. This issue is fixed in ReactPHP HTTP version 1.7.0. As a workaround, Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any unexpected `Cookie` request headers.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 15:52 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/reactphp/http/security/advisor… | x_refsource_CONFIRM |
| https://github.com/reactphp/http/pull/175 | x_refsource_MISC |
| https://github.com/reactphp/http/commit/663c9a3b7… | x_refsource_MISC |
| https://github.com/reactphp/http/releases/tag/v1.7.0 | x_refsource_MISC |
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CVE-2026-84997 (GCVE-0-2026-84997)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:07 – Updated: 2026-09-16 14:46
VLAI
EPSS
VEX
Title
react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU
Summary
react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. From 0.6.0 until 1.11.1, React\Http\Io\ChunkedDecoder could enter an infinite loop while processing a malformed Transfer-Encoding: chunked body because handleData required its buffer to shrink on every iteration. An incomplete terminal-chunk trailer without CRLF left the buffer unchanged after strpos returned false, and exactly two non-CRLF bytes after a completed non-terminal chunk bypassed both the error and wait guards. The affected decoder processes request bodies for React\Http\HttpServer and response bodies for React\Http\Browser, allowing a malicious client to freeze a server or a malicious or compromised server to freeze a client. A reverse proxy that normalizes inbound requests may protect the server direction but does not protect outbound Browser requests. This issue is fixed in version 1.11.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 14:46 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/reactphp/http/security/advisor… | x_refsource_CONFIRM |
| https://github.com/reactphp/http/commit/b6d468879… | x_refsource_MISC |
| https://github.com/reactphp/http/releases/tag/v1.11.1 | x_refsource_MISC |
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CVE-2023-26044 (GCVE-0-2023-26044)
Vulnerability from cvelistv5 – Published: 2023-05-17 17:24 – Updated: 2025-01-23 19:52
VLAI
EPSS
VEX
Title
ReactPHP's HTTP server continues parsing unused multipart parts after reaching limits
Summary
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Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-23 19:51 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/reactphp/http/security/advisor… | x_refsource_CONFIRM |
| https://github.com/reactphp/http/commit/9681f764b… | x_refsource_MISC |
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CVE-2022-36032 (GCVE-0-2022-36032)
Vulnerability from cvelistv5 – Published: 2022-09-06 18:20 – Updated: 2025-04-23 17:14
VLAI
EPSS
VEX
Title
ReactPHP's HTTP server parses encoded cookie names so malicious `__Host-` and `__Secure-` cookies can be sent
Summary
ReactPHP HTTP is a streaming HTTP client and server implementation for ReactPHP. In ReactPHP's HTTP server component versions starting with 0.7.0 and prior to 1.7.0, when ReactPHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like `__Host-` and `__Secure-` confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. This issue is fixed in ReactPHP HTTP version 1.7.0. As a workaround, Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any unexpected `Cookie` request headers.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 15:52 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/reactphp/http/security/advisor… | x_refsource_CONFIRM |
| https://github.com/reactphp/http/pull/175 | x_refsource_MISC |
| https://github.com/reactphp/http/commit/663c9a3b7… | x_refsource_MISC |
| https://github.com/reactphp/http/releases/tag/v1.7.0 | x_refsource_MISC |
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