Auth bypass in Palantir Com.palantir.acme:dossier-App
CVE-2025-62487
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (12.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Palantir Com.palantir.acme:dossier-App — versions 100.30250907.11, 100.30250502.0, 100.30251001.1
- Palantir Com.palantir.acme:gotham-Default-Apps-Bundle — versions 100.30251002.0, 100.30250808.87, 100.30250908.1
- Palantir Com.palantir.acme:stencil-App-Bundle — versions 100.30250907.11, 100.30250507.88, 100.30250908.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-62487?
- CVE-2025-62487 is a low-severity vulnerability in Palantir Com.palantir.acme:dossier-App, classified under Incorrect Authorization. CVSS score: 3.5/10. Published 2026-01-09.
- How severe is CVE-2025-62487?
- Low severity. CVSS v3 base score is 3.5 out of 10.