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 v4.0

7.1 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

0.35% chance of exploitation in the next 30 days, 28th percentile

Published

2026-07-17

Updated

2026-07-28

Proof-of-concept exploits (1)

• geo-chen/oss/blob/main/TheHive.md#finding-2-cross-organisation-attachment-disclosure-via-…

References

• CVE Record
• NVD entry

Related

• CVE-2026-63098
• CVE-2026-63100
• CVE-2026-63097
• CVE-2026-63101
• CVE-2026-63096
• CVE-2026-63107