CVE-2023-35133 json
Moodle: ssrf risk due to insufficient check on the curl blocked hosts
published 2023-06-22 3 y ago modified 2026-09-08 2 mo ago also BIT-moodle-2023-35133 , EUVD-2023-1920 , GHSA-xxp4-mf4h-6cwm
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist moodle/moodle 3.9.22, 3.11.15, 4.0.9, 4.1.4, 4.2.1
- bitnami moodle 3.9.22, 3.11.15, 4.0.9, 4.1.4, 4.2.1
- moodle moodle 3.9.22, 3.11.15, 4.0.9, 4.1.4
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2023-35133 updated cvss 7.5
moodle: SSRF risk due to insufficient check on the cURL blocked hosts
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | moodle/moodle | >=4.2.0, <4.2.1 >=4.1.0, <4.1.4 >=4.0.0, <4.0.9 >=3.10.0, <3.11.15 <3.9.22 |
4.2.1 4.1.4 4.0.9 3.11.15 3.9.22 |
| bitnami | moodle | <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 |
3.9.22 3.11.15 4.0.9 4.1.4 4.2.1 |
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
moodle.org
/mod/forum/discuss.php?d=447831
web, patch, vendor-advisory, advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/7A72KX4WU6GK2CX4TKYFGFASPKOEOJFC/
vendor-advisory, web
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/I5QAEAGJ44NVXLAJFJXKARKC45OGEDXT/
vendor-advisory, web
-
bugzilla.redhat.com
/show_bug.cgi?id=2214373
issue-tracking, web
-
nvd.nist.gov
/vuln/detail/CVE-2023-35133
advisory, web
-
github.com
/moodle/moodle
package
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/7A72KX4WU6GK2CX4TKYFGFASPKOEOJFC
web
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/I5QAEAGJ44NVXLAJFJXKARKC45OGEDXT
web
-
lists.fedoraproject.org
/archives/list/package-announce@lists.fedoraproject.org/message/7A72KX4WU6GK2CX4TKYFGFASPKOEOJFC
web
-
lists.fedoraproject.org
/archives/list/package-announce@lists.fedoraproject.org/message/I5QAEAGJ44NVXLAJFJXKARKC45OGEDXT
web
-
git.moodle.org
/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-78215
web
Sources
- CVE List CVE-2023-35133
- GitHub Advisory GHSA-xxp4-mf4h-6cwm
- NVD CVE-2023-35133
- OSV BIT-moodle-2023-35133
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