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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.

PUBLISHED Reserved 2026-07-05 | Published 2026-07-05 | Updated 2026-07-05 | Assigner CIRCL




CRITICAL: 9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Problem types

CWE-20 Improper Input Validation

Product status

Default status
unaffected

v4.0 (semver)
affected

Credits

George Chen finder

Esa Jokinen remediation developer

P-T-I remediation reviewer

Alexandre Dulaunoy coordinator

References

github.com/cve-search/cve-search/pull/1218 patch

github.com/cve-search/cve-search/issues/1217 exploit technical-description

cve.org (CVE-2026-59509)

nvd.nist.gov (CVE-2026-59509)

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