---
cve: "CVE-2026-32627"
severity: "HIGH"
cvss: 8.7
epss: "18%"
vendor: "yhirose"
kev: false
exploited: false
published: "2026-03-16 14:19:40"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T23:03:02+02:00"
---

# CVE-2026-32627

> 8.7 HIGH · 🧪 PoC

## Beschreibung

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and set_follow_location(true), any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new connection. The client will accept any certificate presented by the redirect target — expired, self-signed, or forged — without raising an error or notifying the application. A network attacker in a position to return a redirect response can fully intercept the follow-up HTTPS connection, including any credentials or session tokens in flight. This vulnerability is fixed in 0.37.2.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 4d7c9a788de136071ccf0dd4e96239151e2adadb (Commit)

## Referenzen

- <https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-c3h8-fqq4-xm4g>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-32627) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_