Vulnerability · Published Jul 17, 2026 · Assigned by VulnCheck

CVE-2026-63099TheHive 4.1.24 Broken Object Level Authorization via Attachment Download Endpoints

Medium 6.5

In plain English

A medium-severity authorization bypass via user-controlled key in TheHive from TheHive-Project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 70.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

TheHive through 4.1.24 contains a broken object-level authorization vulnerability in the attachment download endpoints that allows any authenticated user to access attachments belonging to other organizations by supplying a content-hash identifier. Attackers can exploit the missing organization-scoped authorization check in AttachmentSrv.visible, which is implemented as a pass-through traversal, to download arbitrary attachments.

Affected products (as reported)

Vendor	Product	Versions
TheHive-Project	TheHive	0 – through 4.1.24

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Researcher Disclosure technical-description, exploit
https://www.vulncheck.com/advisories/thehive-broken-object-level-authorization-via-attachment-download-endpoints third-party-advisory