CVE-2026-65013
Onlook through 0.2.32, fixed in commit 423e2e9, contains a broken object level authorization vulnerability that allows authenticated attackers to access and manipulate other users' resources by supplying arbitrary UUID values to tRPC API procedures including project.get, member.remove, and chat.conversation.delete. Attackers can provide arbitrary projectId or conversationId values without authorization validation to read, modify, and delete other users' project data, members, and conversation history.
What this means for your business
- An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.5% chance of attack attempts being seen in the next 30 days, ranking above 43% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Fastnexa security experts
Not sure if your company is exposed to CVE-2026-65013?
Tell us where you run the affected software and a Fastnexa penetration tester will check whether this flaw, or others like it, can be used against your websites, apps and network.
The full test is free for our first 10 founding clients until 31 December 2026. See the offer
Think you’ve already been hit? Don’t wait on a form: call or WhatsApp +1 (732) 454 2616. We reply within 1 hour, 24/7. Emergency help →
Scoring
- CVSS
- 8.8 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- CVSS v4
- 8.7
- Weakness
- CWE-639
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-07-22
- Last modified
- 2026-09-17
- Sources
- NVD
References
- https://github.com/onlook-dev/onlook/commit/423e2e924366419e418ee049093872d535eea41a
- https://github.com/onlook-dev/onlook/issues/3122
- https://github.com/onlook-dev/onlook/pull/3129
- https://www.vulncheck.com/advisories/onlook-trpc-insecure-direct-object-reference-via-multiple-procedures
- https://github.com/onlook-dev/onlook/issues/3122