CVE-2026-56300

8.7 highEPSS 0.5%

High (8.7). EPSS 0.5% chance of exploitation in the next 30 days.

Capgo before 12.128.2 contains unauthenticated security definer RPC functions get_user_id and get_org_perm_for_apikey that expose API key validity oracles and user UUID disclosure. Unauthenticated attackers using the public API key can validate leaked keys, enumerate users and apps, and determine permission levels, significantly increasing the actionability of compromised credentials.

Severity

CVSS 4.0

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
CWE: CWE-200
Published: 2026-06-30
Modified: 2026-07-01
Record from: the NVD, synced 2026-10-19

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-7r6g-whg3-5mm4
https://www.vulncheck.com/advisories/capgo-unauthenticated-api-key-validity-and-permission-oracle-via-rpc-functions
https://github.com/Cap-go/capgo/security/advisories/GHSA-7r6g-whg3-5mm4

Check your stack JSON