CVE-2025-53629

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.23.0, incoming requests using Transfer-Encoding: chunked in the header can allocate memory arbitrarily in the server, potentially leading to its exhaustion. This vulnerability is fixed in 0.23.0. NOTE: This vulnerability is related to CVE-2025-53628.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99	Patch
https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw	Not Applicable
https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w	Exploit Vendor Advisory
https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-07-10 20:15

Updated : 2025-08-06 18:09

NVD link : CVE-2025-53629

Mitre link : CVE-2025-53629

CVE.ORG link : CVE-2025-53629

JSON object : View

Products Affected

yhirose

cpp-httplib

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2025-53629", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2025-07-10T20:15:27.370", "references": [{"url": "https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99", "tags": ["Patch"], "source": "[email protected]"}, {"url": "https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw", "tags": ["Not Applicable"], "source": "[email protected]"}, {"url": "https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w", "tags": ["Exploit", "Vendor Advisory"], "source": "[email protected]"}, {"url": "https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.23.0, incoming requests using Transfer-Encoding: chunked in the header can allocate memory arbitrarily in the server, potentially leading to its exhaustion. This vulnerability is fixed in 0.23.0. NOTE: This vulnerability is related to CVE-2025-53628."}, {"lang": "es", "value": "cpp-httplib es una librer\u00eda HTTP/HTTPS multiplataforma de un solo archivo de encabezado para C++11. Antes de la versi\u00f3n 0.23.0, las solicitudes entrantes que usaban Transfer-Encoding: fragmentadas en el encabezado pod\u00edan asignar memoria arbitrariamente en el servidor, lo que podr\u00eda provocar su agotamiento. Esta vulnerabilidad se corrigi\u00f3 en la versi\u00f3n 0.23.0. NOTA: Esta vulnerabilidad est\u00e1 relacionada con CVE-2025-53628."}], "lastModified": "2025-08-06T18:09:49.790", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "31F7D084-B63B-47CE-B4C6-D358ED013A4D", "versionEndExcluding": "0.23.0"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}