CVE-2025-62706

Katalog CVE

CVSS 6.5 · Medium EPSS 0,46%

Kerentanan Uncontrolled Resource Consumption pada authlib. Skor CVSS 3.1 6.5 (Medium) menurut github.com.

Deskripsi (NVD)

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.5, Authlib’s JWE zip=DEF path performs unbounded DEFLATE decompression. A very small ciphertext can expand into tens or hundreds of megabytes on decrypt, allowing an attacker who can supply decryptable tokens to exhaust memory and CPU and cause denial of service. This issue has been patched in version 1.6.5. Workarounds for this issue involve rejecting or stripping zip=DEF for inbound JWEs at the application boundary, forking and add a bounded decompression guard via decompressobj().decompress(data, MAX_SIZE)) and returning an error when output exceeds a safe limit, or enforcing strict maximum token sizes and fail fast on oversized inputs; combine with rate limiting.

Rincian

Terbit di NVD

22 Oktober 2025

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption
CWE-770: Allocation of Resources Without Limits or Throttling

EPSS (30 hari)

0,46% peluang dieksploitasi; lebih tinggi dari 37,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/authlib/authlib/commit/e0863d5129316b1790eee5f14cece32a03b8184d patch
• https://github.com/authlib/authlib/security/advisories/GHSA-g7f3-828f-7h7m exploit · mitigasi · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2025/10/msg00032.html