NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-33248 · CVE overview and exploitation status

EUVD-2026-15999

GHSA-3f24-pcvm-5jqc

BIT-nats-2026-33248

GO-2026-4828

cve-program · CVE-2026-33248

• https://github.com/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc
• https://advisories.nats.io/CVE/secnote-2026-13.txt

euvd · EUVD-2026-15999

• https://github.com/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc
• https://advisories.nats.io/CVE/secnote-2026-13.txt

nvd · CVE-2026-33248

• https://advisories.nats.io/CVE/secnote-2026-13.txt
• https://github.com/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc

osv · GHSA-3f24-pcvm-5jqc

• 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

osv · GO-2026-4828

• https://github.com/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc
• https://advisories.nats.io/CVE/secnote-2026-13.txt

No related changes are available here.