HOMEVULNERABILITIESCVE-2026-33222
MEDIUM

CVE-2026-33222

CWE-285Published: March 25, 2026· Updated: Mar 26, 2026

4.9
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:5.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-33222 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 4.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

linuxfoundation1 product
nats-server
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://advisories.nats.io/CVE/secnote-2026-12.txt
ADVISORYhttps://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9c

All References (2)

→
https://advisories.nats.io/CVE/secnote-2026-12.txtMitigation · Vendor Advisory
→
https://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9cMitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2026-33222
CVSS Score4.9 / 10
SeverityMEDIUM
WeaknessCWE-285
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMar 25, 2026

Related CVEs (CWE-285)

CVE-2026-30956
9.9
CVE-2026-5412
9.9
CVE-2026-10580
9.8
CVE-2026-33105
9.8
CVE-2026-32213
9.8
CVE-2026-7663
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33222 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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