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NATS: Pre-auth remote server crash via WebSocket frame length overflow in wsRead
NATS: Pre-auth remote server crash via WebSocket frame length overflow in wsRead
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-pq2q-rcw4-3hr6
- https://nvd.nist.gov/vuln/detail/CVE-2026-27889
- https://advisories.nats.io/CVE/secnote-2026-03.txt
- https://github.com/nats-io/nats-server
Structured record: https://osv.dev/vulnerability/GHSA-pq2q-rcw4-3hr6
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