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CVE-2022-35649

34
FAUCET Score

CVE-2022-35649 is a critical remote code execution vulnerability in Moodle, stemming from improper input validation when processing PostScript code. This flaw specifically impacts Moodle installations running GhostScript versions older than 9.50. With a CVSS score of 9.8, it presents a severe risk, allowing unauthenticated attackers to achieve complete system compromise with low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential impact necessitates immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.9.0, < 3.9.15CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.11.0, < 3.11.8CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.42%
Probability of exploitation in next 30 days
EPSS Percentile
94.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0842 is in the 90th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.9.15
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.11.8
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 4.0.2

Vendor Advisories (1)

composerGHSA-xp2f-9mx3-3c6pcritical

Moodle PostScript Code Injection

Jul 26, 2022

References

git.moodle.org / gw
PatchVendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6MOKYVRNFNAODP2XSMGJ5CRDUZCZKAR3
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MTKUSFPSYFINSQFSOHDQIDVE6FWBEU6V
moodle.org / mod/forum/discuss.php
Vendor Advisory