---
cve: "CVE-2026-55377"
severity: "HIGH"
cvss: 8.1
epss: "26%"
vendor: "logto-io"
kev: false
exploited: false
published: "2026-07-10 19:57:58"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T21:52:47+02:00"
---

# CVE-2026-55377

> 8.1 HIGH · 🧪 PoC

## Beschreibung

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's Account Center step-up check accepted any active verification record that belonged to the current user and had isVerified === true. A WebAuthn registration verification record for binding a new passkey could be created and verified with only an existing Account API bearer token, then sent in the logto-verification-id header and treated as identityVerified=true by Account Center routes, allowing MFA factor management without proving possession of an existing password, identifier, or MFA factor. This issue is fixed in version 1.41.0.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- f56255a7edf3b22b0ec2fdb814814ce6b0123b74 (Commit)
- 91e55698a42f99438cd41ec2b16a1fc51dbdab8a (Commit)

## Referenzen

- <https://github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j>
- <https://github.com/logto-io/logto/pull/9110>
- <https://github.com/logto-io/logto/commit/f56255a7edf3b22b0ec2fdb814814ce6b0123b74>
- <https://github.com/logto-io/logto/releases/tag/v1.41.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55377) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_