CVE-2026-56383

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM 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
Elevated
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Craft CMS contains a stored cross-site scripting (XSS) vulnerability in the editableTable.twig component when using the 'Row Heading' column type. The application fails to sanitize input within row heading default values, allowing an attacker with an administrator account (with allowAdminChanges enabled) to inject arbitrary JavaScript that executes when another user views a page containing the affected table field. Affected versions are >= 4.5.0-beta.1 through 4.16.18 and >= 5.0.0-RC1 through 5.8.22; fixed in 4.16.19 and 5.8.23.

CVSS v3
4.8
EG Score
4.8MEDIUMmedium confidence
EG Risk
38
EG Risk 38/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity48% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

Published

June 21, 2026

Last Modified

June 23, 2026

Advisory Details (3)

Auto-updated Jun 23, 2026
Patch available. Sources: github_commit, github.
githubMentions a patch (unverified)

Stored XSS in Table Field via "Row Heading" Column Type · Advisory · craftcms/cms · GitHub

https://github.com/craftcms/cms/security/advisories/GHSA-6j87-m5qx-9fqp
generic

Craft CMS - Stored XSS in Table Field via Row Heading Column Type | Advisories | VulnCheck

https://www.vulncheck.com/advisories/craft-cms-stored-xss-in-table-field-via-row-heading-column-type
github_commit Patch Available

commit 7b372de262b8 (craftcms/cms)

Patch available: craftcms/cms 5.9.21 (contains commit 7b372de262b8)

https://github.com/craftcms/cms/commit/7b372de262b8d9d2ce859f32780c3715719b6f5a

Vendor Advisories for CVE-2026-56383(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
craftcms/cms5.0.0 ... 5.8.9 (144 versions)
  • 4.5.0-beta.1 up to 4.16.19: fixed in 4.16.19
  • 5.0.0-RC1 up to 5.8.23: fixed in 5.8.23
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 26× 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.

Showing the most recent 100 of 176 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:26 UTCEPSS rescore
  8. 2026-10-02 17:56 UTCEPSS rescore
  9. 2026-10-02 14:40 UTCOSV refresh
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-29 15:22 UTCEPSS rescore
  13. 2026-09-28 13:51 UTCEPSS rescore
  14. 2026-09-27 13:48 UTCEPSS rescore
  15. 2026-09-26 15:59 UTCEPSS rescore
  16. 2026-09-24 14:04 UTCEPSS rescore
  17. 2026-09-20 20:16 UTCEPSS rescore
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-17 19:31 UTCEPSS rescore
  20. 2026-09-16 14:08 UTCEPSS rescore
  21. 2026-09-16 05:15 UTCEPSS rescore
  22. 2026-09-15 03:11 UTCEPSS rescore
  23. 2026-09-13 16:47 UTCEPSS rescore
  24. 2026-09-13 12:52 UTCEG score recompute
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 75 more
  1. 2026-09-10 09:35 UTCEPSS rescore
  2. 2026-09-08 22:01 UTCEPSS rescore
  3. 2026-09-07 16:01 UTCEPSS rescore
  4. 2026-09-06 13:47 UTCEPSS rescore
  5. 2026-09-04 05:07 UTCEPSS rescore
  6. 2026-09-02 14:12 UTCEPSS rescore
  7. 2026-09-01 13:54 UTCEPSS rescore
  8. 2026-09-01 04:40 UTCEPSS rescore
  9. 2026-08-30 20:42 UTCEG score recompute
  10. 2026-08-30 19:17 UTCEPSS rescore
  11. 2026-08-30 01:22 UTCEPSS rescore
  12. 2026-08-28 21:42 UTCEPSS rescore
  13. 2026-08-27 14:25 UTCEPSS rescore
  14. 2026-08-26 14:46 UTCEPSS rescore
  15. 2026-08-25 13:49 UTCEPSS rescore
  16. 2026-08-24 23:26 UTCEG score recompute
  17. 2026-08-23 23:16 UTCEG score recompute
  18. 2026-08-23 00:19 UTCEPSS rescore
  19. 2026-08-22 22:56 UTCEG score recompute
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 08:08 UTCEG score recompute
  22. 2026-08-20 22:55 UTCEPSS rescore
  23. 2026-08-20 07:53 UTCEG score recompute
  24. 2026-08-19 17:04 UTCEPSS rescore
  25. 2026-08-19 05:47 UTCEG score recompute
  26. 2026-08-18 13:48 UTCEPSS rescore
  27. 2026-08-17 13:47 UTCEPSS rescore
  28. 2026-08-16 20:18 UTCEG score recompute
  29. 2026-08-16 14:56 UTCEPSS rescore
  30. 2026-08-16 02:14 UTCEPSS rescore
  31. 2026-08-15 19:42 UTCEG score recompute
  32. 2026-08-15 01:30 UTCEPSS rescore
  33. 2026-08-14 19:24 UTCEG score recompute
  34. 2026-08-13 22:00 UTCEPSS rescore
  35. 2026-08-12 19:02 UTCEG score recompute
  36. 2026-08-12 13:51 UTCEPSS rescore
  37. 2026-08-11 18:52 UTCEG score recompute
  38. 2026-08-11 00:00 UTCEPSS rescore
  39. 2026-08-09 18:23 UTCEG score recompute
  40. 2026-08-09 13:46 UTCEPSS rescore
  41. 2026-08-08 18:13 UTCEG score recompute
  42. 2026-08-08 16:37 UTCEPSS rescore
  43. 2026-08-07 18:03 UTCEG score recompute
  44. 2026-08-06 17:53 UTCEG score recompute
  45. 2026-08-06 17:52 UTCGHSA enrichment
  46. 2026-08-06 13:47 UTCEPSS rescore
  47. 2026-08-05 19:17 UTCEPSS rescore
  48. 2026-08-05 17:41 UTCGHSA enrichment
  49. 2026-08-04 15:17 UTCEG score recompute
  50. 2026-08-04 15:17 UTCGHSA enrichment
  51. 2026-08-04 15:10 UTCEPSS rescore
  52. 2026-08-04 10:39 UTCEPSS rescore
  53. 2026-08-03 10:36 UTCEPSS rescore
  54. 2026-08-03 08:00 UTCGHSA enrichment
  55. 2026-08-02 05:08 UTCEG score recompute
  56. 2026-08-02 05:08 UTCGHSA enrichment
  57. 2026-08-02 02:27 UTCEPSS rescore
  58. 2026-08-01 04:57 UTCEG score recompute
  59. 2026-08-01 04:57 UTCGHSA enrichment
  60. 2026-08-01 04:16 UTCEPSS rescore
  61. 2026-07-31 03:46 UTCEG score recompute
  62. 2026-07-31 03:45 UTCGHSA enrichment
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 02:49 UTCEG score recompute
  65. 2026-07-30 02:49 UTCGHSA enrichment
  66. 2026-07-30 01:30 UTCEPSS rescore
  67. 2026-07-30 01:30 UTCEPSS rescore
  68. 2026-07-29 01:27 UTCEG score recompute
  69. 2026-07-29 01:27 UTCGHSA enrichment
  70. 2026-07-28 15:37 UTCEPSS rescore
  71. 2026-07-27 18:00 UTCEG score recompute
  72. 2026-07-27 18:00 UTCGHSA enrichment
  73. 2026-07-26 16:18 UTCEG score recompute
  74. 2026-07-26 16:18 UTCGHSA enrichment
  75. 2026-07-26 14:54 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-56383?
CVE-2026-56383 is a medium vulnerability published on June 21, 2026. Craft CMS contains a stored cross-site scripting (XSS) vulnerability in the editableTable.twig component when using the 'Row Heading' column type. The application fails to sanitize input within row heading default values, allowing an attacker with an administrator account (with allowAdminChanges…
When was CVE-2026-56383 disclosed?
CVE-2026-56383 was first published 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-2026-56383 actively exploited?
CVE-2026-56383 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-56383?
CVE-2026-56383 has a CVSS base score of 4.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-56383?
A fix for CVE-2026-56383 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-56383 are linked in the Vendor Advisories panel on this page.

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