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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.

PUBLISHED Reserved 2026-01-01 | Published 2026-01-19 | Updated 2026-01-21 | Assigner EEF




HIGH: 8.5CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

Problem types

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

Product status

Default status
unaffected

617e44c71f1dd9043870205f371d375c5c4d886d (git) before c692438684ead90c3bcbfb9ccf4e63c768c668a8
affected

pkg:github/hexpm/hexpm@617e44c71f1dd9043870205f371d375c5c4d886d (purl) before pkg:github/hexpm/hexpm@c692438684ead90c3bcbfb9ccf4e63c768c668a8
affected

Default status
unaffected

2025-10-01 (date) before 2026-01-19
affected

Credits

Joud Zakharia / zentrust partners GmbH finder

Jonatan Männchen / EEF remediation developer

Eric Meadows-Jönsson / Hex.pm remediation reviewer

References

github.com/.../hexpm/security/advisories/GHSA-6cw9-5gg4-rhpj vendor-advisory

github.com/...ommit/c692438684ead90c3bcbfb9ccf4e63c768c668a8 patch

cve.org (CVE-2026-21618)

nvd.nist.gov (CVE-2026-21618)

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