CVE-2026-84997
- Source
- https://cve.org/CVERecord?id=CVE-2026-84997
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84997.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-84997
- Aliases
- Published
- 2026-09-16T14:07:52Z
- Modified
- 2026-10-28T02:30:42Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-835" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84997.json" }- References
-
- https://github.com/reactphp/http/releases/tag/v1.11.1
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84997.json
- https://github.com/reactphp/http/security/advisories/GHSA-x424-64qh-5j54
- https://nvd.nist.gov/vuln/detail/CVE-2026-84997
- https://github.com/reactphp/http/commit/b6d4688790adf3797071fcf88a3fc4225f30486a
Affected packages
Git / github.com/reactphp/http
Affected ranges
- Type
- GIT
- Repo
- https://github.com/reactphp/http
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0.6.0" }, { "fixed": "1.11.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "b6d4688790adf3797071fcf88a3fc4225f30486a" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v1.11.1", "range": [ { "fixed": "e5b8eb2654dec6cbbc692a39f05ea4ecd40c8cc1" } ], "source": "REFERENCES_TAG" } ] }