CVE-2026-59509 | An unauthenticated improper input validation vulnerability i… | CVSS 9.2 CRITICAL

Description

An unauthenticated improper input validation vulnerability in the POST /fetch_cve_data endpoint in cve-search. A remote attacker can manipulate request parameters controlling the MongoDB collection, projected fields, and regular-expression filters to read arbitrary application MongoDB collections. This can expose administrative usernames and password hashes from the mgmt_users collection, enabling offline password cracking and potential administrative account compromise.

Metadata

CVE ID: CVE-2026-59509
State: PUBLISHED
Assigner: CIRCL
Reserved: 2026-07-05 12:01 UTC
Published: 2026-07-05 12:02 UTC
Last updated: 2026-07-06 13:28 UTC
Primary CWE: CWE-20
CWE-20 Improper Input Validation
Vendor / Product: cve-search / cve-search
Sources: cve.org · NVD

Severity & Metrics

9.2 CRITICAL CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
cve-search	cve-search	—	v4.0 ≤ v6.0.0

Weakness (CWE)

CWE	Source	Description
CWE-20	cna	CWE-20 Improper Input Validation

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.2	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

References (2)