csirt@kutim:~/threat-intel/cve/CVE-2026-21434

Katalog CVE

CVSS 7.5 · High EPSS 0,46%

Kerentanan Allocation of Resources Without Limits or Throttling pada quic-go webtransport-go. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

webtransport-go is an implementation of the WebTransport protocol. From 0.3.0 to 0.9.0, an attacker can cause excessive memory consumption in webtransport-go's session implementation by sending a WT_CLOSE_SESSION capsule containing an excessively large Application Error Message. The implementation does not enforce the draft-mandated limit of 1024 bytes on this field, allowing a peer to send an arbitrarily large message payload that is fully read and stored in memory. This allows an attacker to consume an arbitrary amount of memory. The attacker must transmit the full payload to achieve the memory consumption, but the lack of any upper bound makes large-scale attacks feasible given sufficient bandwidth. This vulnerability is fixed in 0.10.0.

Rincian

Terbit di NVD
12 Februari 2026
Terakhir diubah
17 Juni 2026
Status NVD
Analyzed
CVSS 3.1
7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-770: Allocation of Resources Without Limits or Throttling
EPSS (30 hari)
0,46% peluang dieksploitasi; lebih tinggi dari 38,5% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
quic-go webtransport-go Versi 0.3.0 hingga sebelum 0.10.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.