CVE-2026-56381

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreHIGH confidence

Score 4.8 from GitHub Security Advisory published 2026-06-21. a secondary CVSS source baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Craft CMS from version 5.0.0-RC1 contains a stored cross-site scripting vulnerability in the User Permissions page where user group names are rendered without proper HTML escaping. Attackers with admin access can inject arbitrary JavaScript via the user group name field that executes when other users view or edit permissions.

CVSS v3
4.8
EG Score
4.8(high)
EPSS
4.4%
KEV
Not listed

Published

June 21, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 23, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Craft CMS - Stored XSS via User Group Name in User Permissions Page | Advisories | VulnCheck

https://www.vulncheck.com/advisories/craft-cms-stored-xss-via-user-group-name-in-user-permissions-page
github Patch Available🟡 PoC Available

Stored XSS via User Group Name in User Permissions Page · Advisory · craftcms/cms · GitHub

https://github.com/craftcms/cms/security/advisories/GHSA-g3hp-vvqf-8vw6

Vendor Advisories for CVE-2026-56381(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 51× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 11:27 UTCEG score recompute
  4. 2026-07-06 11:27 UTCGHSA enrichment
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 09:21 UTCEG score recompute
  8. 2026-07-05 09:21 UTCGHSA enrichment
  9. 2026-07-05 02:31 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 07:59 UTCEG score recompute
  12. 2026-07-04 07:59 UTCGHSA enrichment
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-03 06:38 UTCEG score recompute
  16. 2026-07-03 06:38 UTCGHSA enrichment
  17. 2026-07-02 05:11 UTCEG score recompute
  18. 2026-07-02 05:10 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-07-01 03:50 UTCEG score recompute
  21. 2026-07-01 03:50 UTCGHSA enrichment
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 02:29 UTCEG score recompute
  24. 2026-06-30 02:29 UTCGHSA enrichment
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 26 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 01:09 UTCEG score recompute
  3. 2026-06-29 01:09 UTCGHSA enrichment
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-27 23:48 UTCEG score recompute
  8. 2026-06-27 23:48 UTCGHSA enrichment
  9. 2026-06-27 03:08 UTCEPSS rescore
  10. 2026-06-26 22:27 UTCEG score recompute
  11. 2026-06-26 22:27 UTCGHSA enrichment
  12. 2026-06-25 21:07 UTCEG score recompute
  13. 2026-06-25 21:07 UTCGHSA enrichment
  14. 2026-06-25 13:49 UTCEPSS rescore
  15. 2026-06-24 19:46 UTCEG score recompute
  16. 2026-06-24 19:46 UTCGHSA enrichment
  17. 2026-06-24 14:05 UTCEPSS rescore
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 18:23 UTCEG score recompute
  21. 2026-06-23 18:23 UTCGHSA enrichment
  22. 2026-06-22 19:39 UTCNVD updateCVSS v4 → 4.6
  23. 2026-06-22 16:59 UTCEG score recompute
  24. 2026-06-22 16:59 UTCGHSA enrichment
  25. 2026-06-21 15:38 UTCEG score recompute
  26. 2026-06-21 15:38 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-56381?
CVE-2026-56381 is a medium vulnerability published on June 21, 2026. Craft CMS from version 5.0.0-RC1 contains a stored cross-site scripting vulnerability in the User Permissions page where user group names are rendered without proper HTML escaping. Attackers with admin access can inject arbitrary JavaScript via the user group name field that executes when other…
When was CVE-2026-56381 disclosed?
CVE-2026-56381 was first published in the National Vulnerability Database on June 21, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56381 actively exploited?
CVE-2026-56381 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56381?
CVE-2026-56381 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-56381?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56381, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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