CVE-2026-75526

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Source

https://cve.org/CVERecord?id=CVE-2026-75526

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75526.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-75526

Aliases

Published

2026-08-20T18:11:10Z

Modified

2026-10-28T02:30:50Z

Severity

4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator

Summary

django CMS: Stored XSS in edit-mode plugin exception rendering

Details

django CMS is an easy-to-use and developer-friendly enterprise content management system powered by Django. From 5.0.8 until 5.0.9, ContentRenderer.render_placeholder in cms/plugin_rendering.py can pass stored, attacker-controlled values to ContentRenderer.render_exception when plugin rendering fails in edit mode. Values from get_short_description(), the exception message, the placeholder, or placeholder.source are interpolated into a cms-rendering-exception heading and later returned through mark_safe. Because the heading is not escaped, stored HTML executes in an editor’s browser, and settings.DEBUG does not prevent the custom heading from rendering. The fix uses format_html to escape the message before safe placeholder output is returned. This issue is fixed in versions 5.0.9.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75526.json"
}

References

Affected packages

Git / github.com/django-cms/django-cms

Affected ranges

Type

GIT

Repo

https://github.com/django-cms/django-cms

Events

Introduced

6da7840759c2b345a0e2fd4e796be001e681c6a4

Fixed

d7eeb6526bd757cfcdf28122066f39803990c5e4

Fixed

b56a568844ff3702495945f73a31d0868285bf88

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "5.0.8"
                },
                {
                    "fixed": "5.0.9"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "b56a568844ff3702495945f73a31d0868285bf88"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "5.0.9",
            "range": [
                {
                    "fixed": "d7eeb6526bd757cfcdf28122066f39803990c5e4"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

5.*

5.0.8

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75526.json"