CVE-2026-21618

Cross-site scripting (XSS) in OAuth Device Authorization screen

MEDIUM
6.1
CVSS Score
Published: January 19, 2026 at 02:22 PM UTC
Updated: July 24, 2026 at 03:33 PM UTC
2 products affected across 2 vendorsHexpmHexpm

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in hexpm hexpm/hexpm ('Elixir.HexpmWeb.SharedAuthorizationView' modules) allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/hexpm_web/views/shared_authorization_view.ex and program routines 'Elixir.HexpmWeb.SharedAuthorizationView':render_grouped_scopes/3. This issue affects hexpm: from 617e44c71f1dd9043870205f371d375c5c4d886d before c692438684ead90c3bcbfb9ccf4e63c768c668a8, from pkg:github/hexpm/hexpm@617e44c71f1dd9043870205f371d375c5c4d886d before pkg:github/hexpm/hexpm@c692438684ead90c3bcbfb9ccf4e63c768c668a8; hex.pm: from 2025-10-01 before 2026-01-19.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2025-10-1 ≤ v < 2026-01-19
Affected range stops below 2026-01-19, so it looks safe — our inference, not a vendor statement
2025-10-1 ≤ v < 2026-01-192025-10-1617e44c71f1dd9043870205f371d375c5c4d886d
Vendor states this is fixed in c692438684ead90c3bcbfb9ccf4e63c768c668a8 (fixed)
Affected range stops below 2026-01-19, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

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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