What is CVE-2022-27891?

CVE-2022-27891 is a medium-severity vulnerability in Palantir Gotham, classified under Information Disclosure. CVSS score: 5.3/10. Published 2023-02-16.

How severe is CVE-2022-27891?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Palantir Gotham

CVE-2022-27891

Palantir Gotham included an unauthenticated endpoint that listed all active usernames on the stack with an active session. The affected services have been patched and automatically deployed to all Apollo-managed Gotham instances. It is highly recommended that customers upgrade all affected services to the latest version. This issue affects: Palantir Gotham versions prior to 103.30221005.0.

Vulnerability class: Information Disclosure

Published 2023-02-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (34.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Palantir Gotham — versions unspecified

Weakness classification (CWE)

References

github.com/palantir/security-bulletins/blob/main/PLTRSEC-2022-10.md (Vendor Advisory)

Frequently asked questions

What is CVE-2022-27891?: CVE-2022-27891 is a medium-severity vulnerability in Palantir Gotham, classified under Information Disclosure. CVSS score: 5.3/10. Published 2023-02-16.
How severe is CVE-2022-27891?: Medium severity. CVSS v3 base score is 5.3 out of 10.