CVE-2026-58440

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CVSS 3.1

6.8 medium

EPSS

<1%p20

Published

Aug 13, 2026 (Aug 13, 2026)

Modified

Aug 26, 2026

Description

Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content (incomplete revocation cleanup in `DeleteCollaboration`)

Weakness: CWE-284
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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