CVE-2026-123819 (CVSS 6.5)

Description

Wagtail is an open source content management system built on Django. Prior to 7.0.9, 7.3.4, 7.4.3, and 8.0rc2, a CMS user who has add permission for a snippet model but lacks change and view permission for an existing snippet can access the snippet copy view and copy that source object. The copy operation reveals the contents of a snippet that the user is not authorized to view. This issue is fixed in versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0031

Probability of exploitation

0.24%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-280 CWE-280

References

Other References

https://github.com/wagtail/wagtail/commit/03ecdb63b82fa87a4932c08bc4cdd9a99339f6d4 https://github.com/wagtail/wagtail/commit/5afd40f0bc04f7986256ced8ec959af30e1446be https://github.com/wagtail/wagtail/commit/aebf89233c0cc9739e240e1112d705e0c995f79c https://github.com/wagtail/wagtail/commit/c06183cc9c9590e4585f27899173bc741bbbcb10 https://github.com/wagtail/wagtail/releases/tag/v7.0.9 https://github.com/wagtail/wagtail/releases/tag/v7.3.4 https://github.com/wagtail/wagtail/releases/tag/v7.4.3 https://github.com/wagtail/wagtail/releases/tag/v8.0rc2 https://github.com/wagtail/wagtail/security/advisories/GHSA-x5cx-w6p2-mxf2

Frequently Asked Questions

What is CVE-2026-123819? +

Wagtail is an open source content management system built on Django. Prior to 7.0.9, 7.3.4, 7.4.3, and 8.0rc2, a CMS user who has add permission for a snippet model but lacks change and view permission for an existing snippet can access the snippet copy view and copy that source object. The copy operation reveals the contents of a snippet that the user is not authorized to view. This issue is fixed in versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-123819? +

CVE-2026-123819 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0031, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-123819? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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