CVE-2026-42344

Katalog CVE

CVSS 6.3 · Medium EPSS 0,23%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition. Skor CVSS 3.1 6.3 (Medium) menurut github.com.

Deskripsi (NVD)

FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT's isInternalAddress() function in packages/service/common/system/utils.ts is vulnerable to DNS rebinding (TOCTOU — Time-of-Check to Time-of-Use). The function resolves the hostname via dns.resolve4()/dns.resolve6() and checks resolved IPs against private ranges, but the actual HTTP request happens in a separate call with a new DNS resolution, allowing the DNS record to change between validation and fetch. At time of publication, there are no publicly available patches.

Rincian

Terbit di NVD

8 Mei 2026

Terakhir diubah

24 Juli 2026

Status NVD

Deferred

CVSS 3.1

6.3 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

0,23% peluang dieksploitasi; lebih tinggi dari 12,6% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh