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Vulnerabilities ›

CVE-2026-22776

High ⚡ Exploit Available

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.1, a Denial of Service (DoS) vulnerability exists in cpp-httplib due to the unsafe handling of c

CWE-409 — Weakness Type

                    Published: Jan 12, 2026                      ·  Modified: Feb 28, 2026                      ·  Source: NVD                

CVSS v3

7.5

🔗 NVD Official

📄 Description (English)

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.1, a Denial of Service (DoS) vulnerability exists in cpp-httplib due to the unsafe handling of compressed HTTP request bodies (Content-Encoding: gzip, br, etc.). The library validates the payload_max_length against the compressed data size received from the network, but does not limit the size of the decompressed data stored in memory.

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Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 2

https://github.com/yhirose/cpp-httplib/commit/2e2e47bab1ae6a853476eecbc4bf279dd1fef792

security-advisories@github.com

https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-h934-98h4-j43q

security-advisories@github.com

Exploit Vendor Advisory

📦 Affected Products / CPE 1 entries

yhirose:cpp-httplib

📊 CVSS Score

7.5

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityN — None / Network

IntegrityN — None / Network

AvailabilityH — High

📋 Quick Facts

Severity High

CVSS Score7.5

CWECWE-409

EPSS0.08%

Exploit ✓ Yes

Patch ✓ Yes

Published 2026-01-12

Source Feed nvd

Views 3

🏷️ Tags

exploit-available patch-available CWE-409

🏢 Vendor Advisories

🔗 https://github.com/yhirose/cpp-httplib/security/advi...

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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