CVE-2026-21618

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

State: Published
Severity: 8.5 High
Published: Jan 19, 2026
Updated: Jul 24, 2026
Reserved: Jan 1, 2026

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; hex.pm: from 2025-10-01 before 2026-01-19.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N	EEF

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Product	Versions
hexpmhexpm	617e44c71f1dd9043870205f371d375c5c4d886d to before c692438684ead90c3bcbfb9ccf4e63c768c668a8Affected
hex.pmhexpm	2025-10-01 to before 2026-01-19Affected

References

https://github.com/hexpm/hexpm/security/advisories/GHSA-6cw9-5gg4-rhpjvendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2026-21618.htmlrelated
https://osv.dev/vulnerability/EEF-CVE-2026-21618related
https://github.com/hexpm/hexpm/commit/c692438684ead90c3bcbfb9ccf4e63c768c668a8patch

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.