High 8.5Published Jan 19, 2026

CVE-2026-21618Cross-site scripting (XSS) in OAuth Device Authorization screen

Updated under an hour ago (Oct 27, 2026, 7:23 PM ET)

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It affects hexpm and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for hexpm

Exploited in the last 30 days

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.

CVSS: 8.5 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: EEF
NVD analysis: Modified
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

hexpm hexpm hexpm:hexpm	from 617e44c71f1dd9043870205f371d375c5c4d886d before c692438684ead90c3bcbfb9ccf4e63c768c668a8	CNA record
hexpm hex.pm hexpm:hex.pm (from the name)	from 2025-10-01 before 2026-01-19	CNA record
hex hexpm hex:hexpm	from 2025-10-01 before 2026-01-19	NVD

References

References

https://github.com/hexpm/hexpm/security/advisories/GHSA-6cw9-5gg4-rhpj	vendor-advisory, related, mitigation
https://cna.erlef.org/cves/CVE-2026-21618.html	related
https://osv.dev/vulnerability/EEF-CVE-2026-21618	related
https://github.com/hexpm/hexpm/commit/c692438684ead90c3bcbfb9ccf4e63c768c668a8	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.