How severe is CVE-2026-56253?

CVE-2026-56253 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-56253 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-56253?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-56253 have an EU (EUVD) identifier?

Yes. CVE-2026-56253 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38169.

When was CVE-2026-56253 published?

CVE-2026-56253 was published on 2026-06-21 and last updated on 2026-06-23.

CVE-2026-56253

CVE-2026-56253 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38169
Weakness: CWE-284
Published: 2026-06-21
Last modified: 2026-06-23

Description

Capgo before 12.128.2 contains an improper access control vulnerability in the public.get_org_members RPC function that allows unauthenticated attackers to enumerate organization members. Attackers can invoke the endpoint using only the public sb_publishable_* key and an organization UUID to retrieve sensitive member information including email addresses, user IDs, roles, and pending invitations.

Frequently asked questions

What is CVE-2026-56253?: Capgo before 12.128.2 contains an improper access control vulnerability in the public.get_org_members RPC function that allows unauthenticated attackers to enumerate organization members. Attackers can invoke the endpoint using only the public sb_publishable_* key and an organization UUID to retrieve sensitive member information including email addresses, user IDs, roles, and pending invitations.
How severe is CVE-2026-56253?: CVE-2026-56253 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-56253 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-56253?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-56253 have an EU (EUVD) identifier?: Yes. CVE-2026-56253 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38169.
When was CVE-2026-56253 published?: CVE-2026-56253 was published on 2026-06-21 and last updated on 2026-06-23.

References

Other CWE-284 (Improper Access Control) vulnerabilities

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