CVE-2026-56321

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/role_bindings/:org_id endpoint, unlike the POST and DELETE role_bindings routes, so unauthenticated requests reach the handler instead of being rejected at the middleware layer. The handler still performs its own authorization check and returns Unauthorized, so no direct data exposure occurs; the flaw is inconsistent authentication enforcement across HTTP methods that could enable authorization bypass if the handler logic changes.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
24.2%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 23, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Missing authentication middleware on GET /private/role_bindings/:org_id (inconsistent auth enforcement) · Advisory · Cap-go/capgo · GitHub

https://github.com/Cap-go/capgo/security/advisories/GHSA-6c9f-9v99-26ww
generic

Capgo - Missing Authentication Middleware on GET /private/role_bindings Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/capgo-missing-authentication-middleware-on-get-private-role-bindings-endpoint

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 51× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-14 04:45 UTCEG score recompute
  2. 2026-07-13 22:31 UTCEPSS rescore
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-13 04:32 UTCEG score recompute
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-12 04:19 UTCEG score recompute
  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-11 03:59 UTCEG score recompute
  11. 2026-07-10 03:48 UTCEG score recompute
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-09 03:25 UTCEG score recompute
  15. 2026-07-08 15:16 UTCEPSS rescore
  16. 2026-07-08 15:16 UTCEPSS rescore
  17. 2026-07-08 03:14 UTCEG score recompute
  18. 2026-07-07 03:03 UTCEG score recompute
  19. 2026-07-06 16:27 UTCEPSS rescore
  20. 2026-07-06 16:27 UTCEPSS rescore
  21. 2026-07-06 02:49 UTCEG score recompute
  22. 2026-07-06 02:23 UTCEPSS rescore
  23. 2026-07-06 02:23 UTCEPSS rescore
  24. 2026-07-05 02:38 UTCEG score recompute
  25. 2026-07-05 02:31 UTCEPSS rescore
Show 26 more
  1. 2026-07-05 02:30 UTCEPSS rescore
  2. 2026-07-04 06:31 UTCEPSS rescore
  3. 2026-07-04 06:31 UTCEPSS rescore
  4. 2026-07-04 02:26 UTCEG score recompute
  5. 2026-07-03 01:59 UTCEG score recompute
  6. 2026-07-02 01:47 UTCEG score recompute
  7. 2026-07-01 15:07 UTCEPSS rescore
  8. 2026-07-01 01:36 UTCEG score recompute
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 01:25 UTCEG score recompute
  11. 2026-06-29 01:14 UTCEG score recompute
  12. 2026-06-28 14:07 UTCEPSS rescore
  13. 2026-06-28 04:56 UTCEPSS rescore
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-28 01:02 UTCEG score recompute
  16. 2026-06-27 03:08 UTCEPSS rescore
  17. 2026-06-27 00:50 UTCEG score recompute
  18. 2026-06-26 00:39 UTCEG score recompute
  19. 2026-06-25 13:49 UTCEPSS rescore
  20. 2026-06-25 00:25 UTCEG score recompute
  21. 2026-06-24 14:05 UTCEPSS rescore
  22. 2026-06-24 00:14 UTCEG score recompute
  23. 2026-06-23 21:33 UTCEPSS rescore
  24. 2026-06-23 21:33 UTCEPSS rescore
  25. 2026-06-23 00:02 UTCEG score recompute
  26. 2026-06-23 00:00 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56321?
CVE-2026-56321 is a medium vulnerability published on June 22, 2026. Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/rolebindings/:orgid endpoint, unlike the POST and DELETE role_bindings routes, so unauthenticated requests reach the handler instead of being rejected at the middleware…
When was CVE-2026-56321 disclosed?
CVE-2026-56321 was first published in the National Vulnerability Database on June 22, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56321 actively exploited?
CVE-2026-56321 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56321?
CVE-2026-56321 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-56321?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56321, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-56321

Explore →

Is Your Infrastructure Affected by CVE-2026-56321?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs