CVE-2026-56339
Last modified
CVE-2026-56339 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. Capgo (Cap-go/capgo) before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST SECURITY DEFINER RPC function public.rescind_invitation that allows unauthenticated attackers to enumerate organization existence. The function returns distinct error messages (NO_ORG vs NO_RIGHTS) when called with only a publishable API key, enabling attackers to discover valid organization IDs and increase the attack surface for targeted phishing or social engineering campaigns..
Description
Capgo (Cap-go/capgo) before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST SECURITY DEFINER RPC function public.rescind_invitation that allows unauthenticated attackers to enumerate organization existence. The function returns distinct error messages (NO_ORG vs NO_RIGHTS) when called with only a publishable API key, enabling attackers to discover valid organization IDs and increase the attack surface for targeted phishing or social engineering campaigns.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Cap-go | capgo | < 12.128.2 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-56339?
How severe is CVE-2026-56339?
How do I fix CVE-2026-56339?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-56333Capgo before 12.128.2 contains a server-side validation bypa…5.3
- CVE-2026-56334Capgo before 12.128.2 lacks an UPDATE row-level security pol…5.3
- CVE-2026-56335Capgo before 12.128.2 contains an authorization bypass vulne…7.1
- CVE-2026-56336Capgo before 12.128.2 contains an information disclosure vul…6.9
- CVE-2026-56337Capgo before 12.128.2 contains an information disclosure vul…5.3
- CVE-2026-56338Capgo before 12.128.2 contains a denial of service vulnerabi…6.9
- CVE-2026-5634A vulnerability was identified in projectworlds Car Rental P…7.3
- CVE-2026-56340vLLM versions >= 0.10.2 and < 0.13.0 are missing sparse tens…7.5
- CVE-2026-56341AVideo through version 26.0 contains multiple unauthenticate…8.7
- CVE-2026-56342AVideo through version 27.0 contains a server-side request f…6.8
- CVE-2026-56345AVideo through 29.0 contains an authorization bypass vulnera…9.2
- CVE-2026-56346AVideo through version 25.0 contains an authentication bypas…6.9
Are you affected by CVE-2026-56339?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST