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CVE-2020-26231

Bypass of fix for CVE-2020-15247, Twig sandbox escape

Severity
Medium 6.7
Published
22 Nov 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Also known as
GHSA-r89v-cgv7-3jhx
Sources
NVD, Project advisories (GitHub)

Description

October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-15247 (fixed in 1.0.469 and 1.1.0) was discovered that has the same impact as CVE-2020-15247. An authenticated backend user with the cms.manage_pages, cms.manage_layouts, or cms.manage_partials permissions who would normally not be permitted to provide PHP code to be executed by the…

Affected software

SoftwareAffected versions
October CMSServers and applications · cpe:a:octobercms:october
  • Version 1.0.469
  • Version 1.1.0
October CMSServers and applications · github:octobercms/october
  • Version 1.0.469
  • Version 1.1.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-26231
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-26231
  • GitHub Advisory Database https://github.com/advisories/GHSA-r89v-cgv7-3jhx
  • github.com https://github.com/octobercms/october/security/advisories/GHSA-r89v-cgv7-3jhx