What is CVE-2021-32649?

CVE-2021-32649 is a high-severity vulnerability in Octobercms October, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2022-01-14.

How severe is CVE-2021-32649?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Octobercms October

CVE-2021-32649

October CMS is a self-hosted content management system (CMS) platform based on the Laravel PHP Framework. Prior to versions 1.0.473 and 1.1.6, an attacker with "create, modify and delete website pages" privileges in the backend is able to execute PHP code by running specially crafted Twig code in the template markup. The issue has been patched in Build 473 (v1.0.473) and v1.1.6. Those unable to upgrade may apply the patch to their installation manually as a workaround.

Published 2022-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.8th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Octobercms October — versions < 1.0.473, >= 1.1.0, < 1.1.6

Weakness classification (CWE)

References

github.com/octobercms/october/commit/167b592eed291ae1563c8fcc5b9b34a03a300f26 (Patch, Third Party Advisory)
github.com/octobercms/october/security/advisories/GHSA-wv23-pfj7-2mjj (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-32649?: CVE-2021-32649 is a high-severity vulnerability in Octobercms October, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2022-01-14.
How severe is CVE-2021-32649?: High severity. CVSS v3 base score is 8.8 out of 10.