What is CVE-2026-56782?

CVE-2026-56782 is a critical-severity vulnerability in Gorse-Io Gorse, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-06-29.

How severe is CVE-2026-56782?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-56782 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Gorse-Io Gorse

CVE-2026-56782

Gorse before 0.5.10 contains an authentication bypass vulnerability in the /api/dump and /api/restore endpoints that allows unauthenticated attackers to access protected functionality when admin_api_key is empty, which is the default configuration. Remote attackers can exfiltrate the entire database including user records, items, and feedback data containing personally identifiable information, or completely overwrite the dataset without authentication.

Vulnerability class: Broken Authentication

EPSS: 0.033 (87.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gorse-io Gorse — versions 0, 0.5.10

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

Public proof-of-concept exploits

References

disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (issue-tracking, technical-description)
disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56782?: CVE-2026-56782 is a critical-severity vulnerability in Gorse-Io Gorse, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-06-29.
How severe is CVE-2026-56782?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-56782 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.