Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
October Rain versions below 3.7.13, and versions 4.0.0 up to but not including 4.1.5, have a sandbox bypass in the optional Twig safe mode (CMS_SAFE_MODE) via certain methods on the collect() helper. An authenticated user with CMS template editing permissions can bypass Twig sandbox restrictions; the issue only affects installations with safe mode enabled, which is off by default. Upgrade to 3.7.13 or 4.1.5. Alternatively, disable CMS_SAFE_MODE or limit template editing to fully trusted administrators.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.9 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0040, the 34th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:25 UTC First seen by agentprime
- 31 Oct 2026, 14:25 UTC Confirmed by OSV