PatchSiren cyber security CVE debrief
CVE-2026-56253 Capgo CVE debrief
CVE-2026-56253 is a high-severity vulnerability in Capgo, a product of unknown vendor, that allows unauthenticated attackers to enumerate organization members. The vulnerability exists in the public.get_org_members RPC function and can be exploited using only the public sb_publishable_* key and an organization UUID. This exposure can lead to the retrieval of sensitive member information, including email addresses, user IDs, roles, and pending invitations. The CVSS score for this vulnerability is 8.7, indicating a high severity level. Defenders should prioritize patching or mitigating this vulnerability to prevent potential exploitation.
- Vendor
- Capgo
- Product
- Unknown
- CVSS
- HIGH 8.7
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-21
- Original CVE updated
- 2026-06-23
- Advisory published
- 2026-06-21
- Advisory updated
- 2026-06-23
Who should care
Organizations using Capgo, especially those with exposed instances, should be aware of this vulnerability and take immediate action to protect their environments. Security teams and administrators responsible for Capgo instances need to assess their exposure and apply necessary patches or workarounds. Additionally, security researchers and threat hunters should monitor for potential exploitation attempts targeting this vulnerability.
Technical summary
The vulnerability CVE-2026-56253 is caused by improper access control in the public.get_org_members RPC function of Capgo. This function can be invoked by unauthenticated attackers using a public sb_publishable_* key and an organization UUID. Successful exploitation allows attackers to retrieve sensitive information about organization members, including email addresses, user IDs, roles, and pending invitations. The vulnerability has a CVSS score of 8.7 and a HIGH severity rating. The affected product version is Capgo before 12.128.2.
Defensive priority
High priority due to high CVSS score and potential for sensitive information disclosure
Recommended defensive actions
- Apply the patch or update Capgo to version 12.128.2 or later
- Limit exposure by restricting access to the public.get_org_members RPC function
- Monitor for exploitation attempts and anomalous activity
- Review and update organization member roles and permissions
- Implement additional security measures to protect sensitive member information
Evidence notes
The primary evidence for this vulnerability comes from the CVE record and NVD detail pages. The vulnerability affects Capgo versions before 12.128.2. Defenders should verify the version of Capgo in use and check for any existing patches or workarounds. The public.get_org_members RPC function's access control should be reviewed and restricted if necessary.
Official resources
This article is AI-assisted and based on the supplied source corpus.