CVE Explorer

CVE-2026-33222

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, users with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, if developers have configured users to have limited JetStream restore permissions, temporarily remove those permissions.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c1b31901aa208ee83792c0dc895b6dbf3fb12a90a191b62ca9e36dcd1952ce00

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"nats-server","vendor":"nats-io","versions":[{"status":"affected","version":"< 2.11.15"},{"status":"affected","version":">= 2.12.0-RC.1, < 2.12.6"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:9d6574b853515a88078e677c5b445473b2a91b128ad9f4b2bce013f7ae755f60 · sha256:ec43d90c494efe97… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:9d6574b853515a88078e677c5b445473b2a91b128ad9f4b2bce013f7ae755f60 · sha256:ec43d90c494efe97… · /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:v2:9d6574b853515a88078e677c5b445473b2a91b128ad9f4b2bce013f7ae755f60 · sha256:ec43d90c494efe97… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://advisories.nats.io/CVE/secnote-2026-12.txt","tags":["x_refsource_MISC"],"url":"https://advisories.nats.io/CVE/secnote-2026-12.txt"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:9d6574b853515a88078e677c5b445473b2a91b128ad9f4b2bce013f7ae755f60 · sha256:ec43d90c494efe97… · /containers/cna/references/1

{"name":"https://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:9d6574b853515a88078e677c5b445473b2a91b128ad9f4b2bce013f7ae755f60 · sha256:ec43d90c494efe97… · /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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