CVE-2026-63099

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.

CVSS 4.0

7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)

CWE

CWE-639

Published

2026-07-17

Modified

2026-10-24

Record from

the NVD, synced 2026-10-25

References

• https://github.com/geo-chen/oss/blob/main/TheHive.md#finding-2-cross-organisation-attachment-disclosure-via-unauthorized-datastore-endpoint-missing-object-level-authorization
• https://www.vulncheck.com/advisories/thehive-broken-object-level-authorization-via-attachment-download-endpoints

Check your stackJSON