CVE-2021-46871
MEDIUM
6.1
CVSS Score
Published: January 10, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 04:15 AM UTC
1 product affected across 1 vendorPhoenix Html
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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in HEEx class attributes.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 3.0.4
Affected range stops below 3.0.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
PatchThird Party Advisory
Source: [email protected]
https://github.com/phoenixframework/phoenix_html/commit/62a0139fb716bcdce697f6221244bd81d321d620SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.1MEDIUMCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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