{"id":"CVE-2026-58252","title":"NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system","summary":"NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user could receive messages on denied subjects when a wildcard subscription overlapp…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-285"],"vendor":"linuxfoundation","product":"nats-server","affected":["nats-server < 2.11.16","nats-server >= 2.12.0, < 2.12.7"],"patched":["nats-server 2.12.7"],"published":"2026-07-08","updated":"2026-07-13","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-58252","references":[{"url":"https://github.com/nats-io/nats-server/commit/8ced85a11497f86704a95d960281480ce037386b","label":"security-advisories@github.com"},{"url":"https://github.com/nats-io/nats-server/commit/a42a6d1e258eb5c3a2190384d31965a4b715e854","label":"security-advisories@github.com"},{"url":"https://github.com/nats-io/nats-server/commit/e611ca9604697b02d8f22beb76037400a9cf72e6","label":"security-advisories@github.com"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.11.16","label":"security-advisories@github.com"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.7","label":"security-advisories@github.com"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.0","label":"security-advisories@github.com"},{"url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-wh7g-5m82-pmhr","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00464,"epssPercentile":0.39322,"ingestedAt":"2026-07-13T15:27:34.300Z","slug":"CVE-2026-58252","body":"## Overview\n\nNATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user could receive messages on denied subjects when a wildcard subscription overlapped with a configured wildcard deny rule but was not a subset of it, and queue subscriptions could also affect delivery to legitimate queue consumers. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.\n\n## Affected\n\n- `nats-server < 2.11.16`\n- `nats-server >= 2.12.0, < 2.12.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `nats-server 2.12.7`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}