CVE-2016-9910
CVE-2016-9910 is a medium-severity vulnerability in Html5lib with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 4.3
- EPSS exploit prediction: 2% (80th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Html5lib
- Published:
- Last modified:
Description
The serializer in html5lib before 0.99999999 might allow remote attackers to conduct cross-site scripting (XSS) attacks by leveraging mishandling of special characters in attribute values, a different vulnerability than CVE-2016-9909.
Frequently asked questions
- What is CVE-2016-9910?
- The serializer in html5lib before 0.99999999 might allow remote attackers to conduct cross-site scripting (XSS) attacks by leveraging mishandling of special characters in attribute values, a different vulnerability than CVE-2016-9909.
- How severe is CVE-2016-9910?
- CVE-2016-9910 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2016-9910 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-9910?
- CVE-2016-9910 affects Html5lib. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2016-9910?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2016-9910 published?
- CVE-2016-9910 was published on 2017-02-22 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2016/12/06/5
- http://www.openwall.com/lists/oss-security/2016/12/08/8
- http://www.securityfocus.com/bid/95132
- https://github.com/html5lib/html5lib-python/commit/9b8d8eb5afbc066b7fac9390f5ec75e5e8a7cab7
- https://github.com/html5lib/html5lib-python/issues/11
- https://github.com/html5lib/html5lib-python/issues/12
- https://html5lib.readthedocs.io/en/latest/changes.html#b9
Affected products (1)
- cpe:2.3:a:html5lib:html5lib:*:1.0b8:*:*:*:*:*:*
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