---
cve: "CVE-2026-22776"
severity: "HIGH"
cvss: 8.7
epss: "36%"
vendor: "yhirose"
kev: false
exploited: false
published: "2026-01-12 19:16:03"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T23:02:25+02:00"
---

# CVE-2026-22776

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- bd95e67c234930cd6d6bb11309588c5462c63cec (Commit)
- 2e2e47bab1ae6a853476eecbc4bf279dd1fef792 (Commit)

## Referenzen

- <https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-h934-98h4-j43q>
- <https://github.com/yhirose/cpp-httplib/commit/2e2e47bab1ae6a853476eecbc4bf279dd1fef792>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-22776) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_