CVE-2023-35133
Moodle: ssrf risk due to insufficient check on the curl blocked hosts
7.5
HIGH
CVSS 3.1
EPSS 0.39%
Description
An issue in the logic used to check 0.0.0.0 against the cURL blocked hosts lists resulted in an SSRF risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8, 3.11 to 3.11.14, 3.9 to 3.9.21 and earlier unsupported versions.
How to fix CVE-2023-35133
To remediate CVE-2023-35133, upgrade the affected package to a fixed version below.
- —upgrade to 3.9.22 or later
- —upgrade to 4.2.1 or later
Is CVE-2023-35133 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.9.22, >= 3.11.0, < 3.11.15, >= 4.0.0, < 4.0.9, >= 4.1.0, < 4.1.4, >= 4.2.0, < 4.2.1
- >= 4.2.0, < 4.2.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |