CVE-2026-59509
CriticalPublic exploitAn unauthenticated improper input validation vulnerability in the POST /fetch_cve_data endpoint in cve-search.
Published Jul 5, 2026 · Updated Jul 6, 2026
Key Facts
Patch immediately- CVE-2026-59509 is a critical-severity vulnerability (CVSS 9.2 v4) affecting cve-search.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 1.4% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
CVSS v4
9.2
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
EPSS (30-day exploit likelihood)
1.4%
Higher than 72.5% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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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.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| cve-search | >= v4.0 | n/a |
Timeline
Publicly disclosed
Jul 5, 2026
Last updated
Jul 6, 2026
Weakness Type
- CWE-20 Improper Input Validation
References
FAQ
Common Questions.
An unauthenticated improper input validation vulnerability in the POST /fetch_cve_data endpoint in cve-search.
Affected: cve-search versions >= v4.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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