CVE•Published 2026-09-03•Modified 2026-09-14•1 article on news•5 live references•NVD data
CVE-2026-85394
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
13
Exploit Prediction Scoring System · top 87% of all CVEs
Weaknesses (CWE)
Description
python-jose through 3.5.0 fails to properly validate asymmetric keys in HMAC initialization, accepting DER-encoded public keys that lack PEM armor or SSH prefixes. Attackers holding the service's public key can forge HS256 tokens that pass verification when algorithms are not explicitly restricted. This is an incomplete fix for CVE-2024-33663.
Timeline
Published 2026-09-03
Modified 2026-09-14
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-2026-85394Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-85394Censys host search filtered to this CVE id.
grep.app
CVE-2026-85394Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-85394GitHub code search for direct mentions.
Google dork
"CVE-2026-85394" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-85394 on GitHub.