CVE•Published 2026-07-14•Modified 2026-07-15•0 articles on news•3 live references•NVD data
CVE-2026-49854
Vulnerability data via NVD (ingested)
CVSS v3.1
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocket_mask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided buffer when reached through Tornado XSRF token decoding with the native extension active. This issue is fixed in version 6.5.6.
Timeline
Published 2026-07-14
Modified 2026-07-15
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). Live host counts are a Premium feature.
More intel sources (5)
Shodan report
vuln:CVE-2026-49854Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-49854Censys host search filtered to this CVE id.
grep.app
CVE-2026-49854Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-49854GitHub code search for direct mentions.
Google dork
"CVE-2026-49854" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-49854 on GitHub.
We haven't classified any articles referencing CVE-2026-49854 yet. The external references above still apply.