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CVE-2026-58252
NATS Server: Subscribe Authz Bypass via Wildcard-Overlap
Medium6.5EPSS 0.46%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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 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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.46% · top 60% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
- affected < 2.11.16
- affected >= 2.12.0-preview.1, < 2.12.7
References (7)
- https://github.com/nats-io/nats-server/security/advisories/GHSA-wh7g-5m82-pmhr (opens in a new tab)x_refsource_CONFIRM
- https://github.com/nats-io/nats-server/commit/8ced85a11497f86704a95d960281480ce037386b (opens in a new tab)x_refsource_MISC
- https://github.com/nats-io/nats-server/commit/a42a6d1e258eb5c3a2190384d31965a4b715e854 (opens in a new tab)x_refsource_MISC
- https://github.com/nats-io/nats-server/commit/e611ca9604697b02d8f22beb76037400a9cf72e6 (opens in a new tab)x_refsource_MISC
- https://github.com/nats-io/nats-server/releases/tag/v2.11.16 (opens in a new tab)x_refsource_MISC
- https://github.com/nats-io/nats-server/releases/tag/v2.12.7 (opens in a new tab)x_refsource_MISC
- https://github.com/nats-io/nats-server/releases/tag/v2.14.0 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-58252)Record last updated .