Medium severity4.9NVD Advisory· Published Mar 25, 2026· Updated Jun 17, 2026
CVE-2026-33222
CVE-2026-33222
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/nats-io/nats-server/v2Go | < 2.11.15 | 2.11.15 |
github.com/nats-io/nats-server/v2Go | >= 2.12.0-RC.1, < 2.12.6 | 2.12.6 |
github.com/nats-io/nats-serverGo | >= 0 | — |
Affected products
41- osv-coords39 versionspkg:apk/chainguard/k3spkg:apk/chainguard/k3s-1.32pkg:apk/chainguard/k3s-1.33pkg:apk/chainguard/k3s-staticpkg:apk/chainguard/k3s-static-1.32pkg:apk/chainguard/k3s-static-1.33pkg:apk/chainguard/kinepkg:apk/chainguard/milvus-2.5pkg:apk/chainguard/natspkg:apk/chainguard/nats-fipspkg:apk/chainguard/nats-toppkg:apk/chainguard/nats-top-fipspkg:apk/chainguard/prometheus-nats-exporterpkg:apk/chainguard/prometheus-nats-exporter-fipspkg:apk/chainguard/rke2-runtime-1.33pkg:apk/chainguard/rke2-runtime-1.34pkg:apk/chainguard/rke2-runtime-1.35pkg:apk/chainguard/rke2-runtime-fips-1.33pkg:apk/chainguard/rke2-runtime-fips-1.34pkg:apk/chainguard/rke2-runtime-fips-1.35pkg:apk/chainguard/telegraf-1.37pkg:apk/chainguard/telegraf-1.38pkg:apk/wolfi/k3spkg:apk/wolfi/k3s-1.32pkg:apk/wolfi/k3s-1.33pkg:apk/wolfi/k3s-staticpkg:apk/wolfi/k3s-static-1.32pkg:apk/wolfi/k3s-static-1.33pkg:apk/wolfi/kinepkg:apk/wolfi/natspkg:apk/wolfi/nats-toppkg:apk/wolfi/prometheus-nats-exporterpkg:apk/wolfi/telegraf-1.37pkg:apk/wolfi/telegraf-1.38pkg:bitnami/natspkg:golang/github.com/nats-io/nats-serverpkg:golang/github.com/nats-io/nats-server/v2pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 1.35.2.1-r4+ 38 more
- (no CPE)range: < 1.35.2.1-r4
- (no CPE)range: < 1.32.13.1-r7
- (no CPE)range: < 1.33.9.1-r6
- (no CPE)range: < 1.35.2.1-r4
- (no CPE)range: < 1.32.13.1-r7
- (no CPE)range: < 1.33.9.1-r6
- (no CPE)range: < 0.14.15-r1
- (no CPE)range: < 2.5.27-r4
- (no CPE)range: < 0.3.2-r0
- (no CPE)range: < 0.3.2-r0
- (no CPE)range: < 0.6.3-r18
- (no CPE)range: < 0.6.3-r16
- (no CPE)range: < 0.19.1-r4
- (no CPE)range: < 0.19.1-r4
- (no CPE)range: < 1.33.9.2.1-r3
- (no CPE)range: < 1.34.5.2.1-r3
- (no CPE)range: < 1.35.2.2.1-r3
- (no CPE)range: < 1.33.10.2.3-r2
- (no CPE)range: < 1.34.6.2.1-r2
- (no CPE)range: < 1.35.2.2.1-r2
- (no CPE)range: < 1.37.3-r6
- (no CPE)range: < 1.38.1-r1
- (no CPE)range: < 1.35.2.1-r4
- (no CPE)range: < 1.32.13.1-r7
- (no CPE)range: < 1.33.9.1-r6
- (no CPE)range: < 1.35.2.1-r4
- (no CPE)range: < 1.32.13.1-r7
- (no CPE)range: < 1.33.9.1-r6
- (no CPE)range: < 0.14.15-r1
- (no CPE)range: < 0.3.2-r0
- (no CPE)range: < 0.6.3-r18
- (no CPE)range: < 0.19.1-r4
- (no CPE)range: < 1.37.3-r6
- (no CPE)range: < 1.38.1-r1
- (no CPE)range: < 2.11.15
- (no CPE)range: >= 0
- (no CPE)range: < 2.11.15
- (no CPE)range: < 0.0.20260326T203309-150000.1.155.2
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
- Range: < 2.11.15
Patches
Vulnerability mechanics
References
4- advisories.nats.io/CVE/secnote-2026-12.txtnvdMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-9983-vrx2-fg9cghsaADVISORY
- github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9cnvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-33222ghsaADVISORY
News mentions
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