4.8

CVE-2026-56383: craftcms cms Cross-site Scripting

CVSS: 4.8v3.1MediumDeferred
Published 21-06-2026Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2026-56383 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in craftcms cms. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.4% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 21-06-2026
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

0.00 pp

From 0.31% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Craftcms1 product
  • cms≥ 4.5.0-beta.1, < 4.16.19 | ≥ 5.0.0-RC1, < 5.8.23

1 vendor · 1 product

References

3 links