Security readout for executives and security teams
CVE-2016-9910 is a potential XSS issue in html5lib's serializer before 0.99999999. If an application serializes attacker-controlled HTML or attributes, special-character mishandling could let unsafe content reach a user's browser. Exposure is most likely in Python applications or tools that depend on html5lib before 0.99999999 and serialize untrusted or user-supplied HTML. The source bundle does not identify specific downstream products. Prioritize remediation for internet-facing applications that process user-submitted HTML. Treat as moderate unless exposure is confirmed in sensitive user workflows or administrative interfaces. Mitigation focus: Upgrade html5lib to 0.99999999 or later where present.; Check vendor or distribution guidance for packaged html5lib builds.; Reduce or avoid serialization of untrusted HTML when possible..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2016-9910 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/html5lib/html5lib-python/issues/12CVE reference · x_refsource_CONFIRM
- https://html5lib.readthedocs.io/en/latest/changes.html#b9CVE reference · x_refsource_CONFIRM
- https://github.com/html5lib/html5lib-python/commit/9b8d8eb5afbc066b7fac9390f5ec75e5e8a7cab7CVE reference · x_refsource_CONFIRM
- https://github.com/html5lib/html5lib-python/issues/11CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
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