phoenixframework phoenix html vulnerabilities

Latest phoenixframework phoenix html CVEs

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1. CVE-2026-117645 Phoenix.HTML vulnerable to attribute injection via unvalidated attribute names in attributes_escape/1

   Published 2026-10-30

   Medium·CVSS 5.3 EPSS 0.32%

   Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in phoenixframework phoenix_html allows an attacker who controls attribute names to inject attributes and script into rendered HTML via Phoenix.HTML.attributes_escape/1. attributes_...

2. CVE-2021-46871 phoenix_html allows Cross-site Scripting in HEEx class attributes

   Published 2023-01-10

   Medium·CVSS 6.1 EPSS 0.45%

   tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in HEEx class attributes.

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.