csirt@kutim:~/threat-intel/cve/CVE-2026-87803

Katalog CVE

CVSS 7.1 · High EPSS 0,31%

Kerentanan Incorrect Authorization. Skor CVSS 3.1 7.1 (High) menurut snyk.io.

Deskripsi (NVD)

An authorization bypass vulnerability exists in the Countly Server DBViewer due to flawed sub-pipeline detection in the aggregation stage sanitizer. The /o/db aggregation endpoint parses user-controlled aggregation JSON and passes it through a stage sanitizer that determines whether a nested array is a sub-pipeline by checking if every element contains a key present in a hardcoded KNOWN_STAGE_OPERATORS set. If any element contains an unrecognized stage key, such as the undocumented MongoDB-internal $_internalInhibitOptimization, the sanitizer misclassifies the entire branch as a generic array and skips stage-level stripping for all sibling stages. This allows a non-admin user with DBViewer read permission to inject forbidden operators like $lookup inside $facet sub-pipelines, performing cross-collection joins into restricted collections. This leads to unauthorized read access to sensitive data including password-reset tokens (prid), enabling account takeover.

Rincian

Terbit di NVD
10 September 2026
Terakhir diubah
10 September 2026
Status NVD
Deferred
CVSS 3.1
7.1 (High), sumber snyk.io
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-863: Incorrect Authorization
EPSS (30 hari)
0,31% peluang dieksploitasi; lebih tinggi dari 21,8% 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

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.