CVE-2016-9631: An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33.

Security readout for executives and security teams

CVE-2016-9631 is a denial-of-service flaw in the Tatsuya Kinoshita w3m fork before 0.5.3-33. A maliciously crafted HTML page can crash w3m. Business impact is availability loss for users or automation relying on w3m, not documented data theft or code execution. Exposure is likely limited to systems that have the affected w3m fork installed and use it to render untrusted or externally supplied HTML. Server exposure depends on whether w3m is used in automated workflows or user-accessible processing paths. Treat as a focused maintenance issue unless w3m is embedded in production workflows. Prioritize remediation where crashes could disrupt services, batch jobs, support tooling, or security automation. Mitigation focus: Upgrade w3m to 0.5.3-33 or a vendor package containing that fix.; Check distribution or vendor advisories for backported fixes.; Avoid rendering untrusted HTML with affected w3m versions until remediated..

Prepared

Jun 13, 2026, 13:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.