VDB
BIT-NATS-2026-33249
BIT-NATS-2026-33249
PUBLISHED
CVSS 4.300000190734863 MEDIUM
Record from circl · Published March 25, 2026
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject, including those to which the client does not have publish permission. The payload is a valid trace message and not chosen by the attacker. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.
Risk scores
CVSS 3.1
4.300000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Affected products
| Vendor | Product | Versions |
|---|---|---|
| nats-io | nats-server | >= 2.11.0, < 2.11.15, >= 2.12.0-preview.1, < 2.12.6 |
Timeline
- Mar 25, 2026 CVE Published
- Mar 26, 2026 PoC Published
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln BIT-NATS-2026-33249
vulnetix vdb fixes BIT-NATS-2026-33249Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/BIT-NATS-2026-33249/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart