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NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching
NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching
Affected packages
- github.com/nats-io/nats-server
- github.com/nats-io/nats-server/v2
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc
- https://nvd.nist.gov/vuln/detail/CVE-2026-33248
- https://advisories.nats.io/CVE/secnote-2026-13.txt
- https://github.com/nats-io/nats-server
Structured record: https://osv.dev/vulnerability/GHSA-3f24-pcvm-5jqc
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