🛡️ CVE-2021-32649 — system

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-74 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

October/System authenticated file write leads to remote code execution

Impact

Assuming 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.

Patches

Issue has been patched in Build 473 and v1.1.6

Workarounds

Apply https://github.com/octobercms/october/commit/167b592eed291ae1563c8fcc5b9b34a03a300f26 to your installation manually if you are unable to upgrade.

References

Credits to:

• David Miller

For more information

If you have any questions or comments about this advisory:

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2021-32649 is recorded against 1 package.

  • october/system (fixed in 1.0.473)

Timeline and source

Published on 14 January 2022 and last revised on 8 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-74
Public Exploit ✅ No
Source OSV
Published 2022-01-14
Updated 2026-08-12
Modified 2026-07-08
Fix URL N/A

Affected Packages

Software From version Fixed in
october/system — 1.0.473

Similar Threats

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