CVE-2021-4461

Katalog CVE

CVSS 9.3 · Critical EPSS 0,49%

Kerentanan Missing Authentication for Critical Function. Skor CVSS 4.0 9.3 (Critical) menurut vulncheck.com.

Deskripsi (NVD)

Seeyon Zhiyuan OA Web Application System versions up to and including 7.0 SP1 improperly decode and parse the `enc` parameter in thirdpartyController.do. The decoded map values can influence session attributes without sufficient authentication/authorization checks, enabling attackers to assign a session to arbitrary user IDs. VulnCheck has observed this vulnerability being exploited in the wild as of 2025-10-30 at 00:30:40.855917 UTC.

Rincian

Terbit di NVD

30 Oktober 2025

Terakhir diubah

17 Juni 2026

Status NVD

Deferred

CVSS 4.0

9.3 (Critical), sumber vulncheck.com
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-306: Missing Authentication for Critical Function

EPSS (30 hari)

0,49% peluang dieksploitasi; lebih tinggi dari 40,4% 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/chaitin/xray/blob/f90cf321bc4d294bbf6625a9c4853f3bfdf0a384/pocs/seeyon-oa-cookie-leak.yml
• https://github.com/projectdiscovery/nuclei-templates/blob/1ca6b8e6fe225cbd46dcb893dcaee01447afa8c0/http/miscon...
• https://mp.weixin.qq.com/s/0AqdfTrZUVrwTMbKEKresg
• https://www.vulncheck.com/advisories/seeyon-zhiyuan-oa-web-application-system-authentication-bypass