CVE-2025-62487 Missing authorization in com.palantir.acme:dossier-app
Attackers can access uploaded files without proper security markings in Palantir Dossier deployments lacking CBAC configuration.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-62487?
CVE-2025-62487 is a low-severity missing authorization vulnerability in com.palantir.acme:dossier-app, published on 9 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
On October 1, 2025, Palantir discovered that images uploaded through the Dossier front-end app were not being marked correctly with the proper security levels. The regression was traced back to a change in May 2025, which was meant to allow file uploads to be shared among different artifacts (e.g. other dossiers and presentations).
On deployments configured with CBAC, the front-end would present a security picker dialog to set the security level on the uploads, thereby mitigating the issue.
On deployments without a CBAC configuration, no security picker dialog appears, leading to a security level of CUSTOM with no markings or datasets selected. The resulting markings and groups for the file uploads thus will be only those added by the default authorization rules defined in the Auth Chooser configuration. On most environments, it is expected that the default authorization rules only add the Everyone group.
Weakness: CWE-863
Which versions are affected by CVE-2025-62487?
How do I fix CVE-2025-62487?
No fix has been published for CVE-2025-62487 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-62487 being exploited?
There is no known exploitation of CVE-2025-62487 in the wild and no public exploit code.
Sources
Also known as GHSA-4wq3-r6vg-34q5.