CVE•Published 2026-10-23•Modified 2026-10-23•0 articles on news•3 live references•NVD data
CVE-2026-89320
Vulnerability data via NVD (ingested)
CVSS v3.1
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EPSS percentile
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Weaknesses (CWE)
Description
`HmacShaCryptor.Hash` never hashed its input. For any input it returned `HMAC_K("")` — the MAC of the empty message under the key. Every AES-CBC-HMAC JWE produced or verified by gose therefore carried an authentication tag that is constant per key and independent of the message, removing ciphertext integrity entirely.
Timeline
Published 2026-10-23
Modified 2026-10-23
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-89320Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-89320Censys host search filtered to this CVE id.
grep.app
CVE-2026-89320Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-89320GitHub code search for direct mentions.
Google dork
"CVE-2026-89320" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-89320 on GitHub.
We haven't classified any articles referencing CVE-2026-89320 yet. The external references above still apply.