VulnSocial

CVE-2026-49854Patch

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-126

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 2 signals
  • Peaked 1d ago at 1 mentions (2026-06-16); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-06-16: 1Mentions · 2026-07-20: 1Patch / Workaround · 2026-06-16: 1Patch / Workaround · 2026-07-20: 1Technical Details · 2026-06-16: 1Technical Details · 2026-07-20: 106-1607-20
Signal classification1 categories
Patch
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • Daily CyberSecurity@the_yellow_fall
    Patch

    Three Tornado security vulnerabilities (CVE-2026-49853, CVE-2026-49855, CVE-2026-49854) risk credential leaks and DoS. Update to Tornado 6.5.6 now. #Tornado #Python #CVE202649853 #InfoSec #AppSec https://securityonline.info/tornado-security-vulnerabilities-6-5-6 https://t.co/kr7C3LC12U

    Post summary

    Three Tornado CVEs (CVE‑2026‑49853, CVE‑2026‑49855, CVE‑2026‑49854) pose credential‑leak and DoS risks, and the vendor recommends updating to Tornado 6.5.6.

    00050348
    12.8K followersView on X
  • VulniPulse@vulnipulse
    Patch

    ⚠️ Linux Red Hat Ansible Automation Platform alert: CVE-2026-49854 (CVSS 5.3) Attackers could access sensitive information. Upgrade to a vendor-listed fixed release. https://vulnipulse.com/advisories/linux-cve-2026-49854 #Linux #RedHatAnsibleAutomationPlatform #CyberSecurity #CVE

    Post summary

    The advisory announces CVE‑2026‑49854 with a CVSS score of 5.3, warns that attackers could read sensitive data, and recommends applying the vendor‑issued fix.

    0000029
    6 followersView on X

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