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CVE-2026-58251

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 with subscription deny permissions could bypass a plain subject deny rule by using a queue subscription, because queue-specific deny evaluation could override the plain subject deny result when the queue name itself was not denied. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e5af98e61c0c022308438dadc4dbcbd1bc5dabe07d202dadb119d06ab024fa35
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"nats-server","vendor":"nats-io","versions":[{"status":"affected","version":"< 2.11.16"},{"status":"affected","version":">= 2.12.0-RC.1, < 2.12.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-285","description":"CWE-285: Improper Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"name":"https://github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65c","tags":["x_refsource_MISC"],"url":"https://github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/references/1
{"name":"https://github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1","tags":["x_refsource_MISC"],"url":"https://github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/references/2
{"name":"https://github.com/nats-io/nats-server/commit/b9ffb63b85e7db3d25a13b2e234f5f7f7c13164d","tags":["x_refsource_MISC"],"url":"https://github.com/nats-io/nats-server/commit/b9ffb63b85e7db3d25a13b2e234f5f7f7c13164d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/references/3
{"name":"https://github.com/nats-io/nats-server/releases/tag/v2.11.16","tags":["x_refsource_MISC"],"url":"https://github.com/nats-io/nats-server/releases/tag/v2.11.16"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/references/4
{"name":"https://github.com/nats-io/nats-server/releases/tag/v2.12.7","tags":["x_refsource_MISC"],"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/references/5
{"name":"https://github.com/nats-io/nats-server/releases/tag/v2.14.0","tags":["x_refsource_MISC"],"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/references/6
{"name":"https://github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:774f49d20293501f50db972cbcd2dcbfa758537d60ffddae2efe0bd6bfc2b382 · sha256:f3901f6d842e0453… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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