Public proof of conceptFix available

CVE-2022-35649

Q: Is CVE-2022-35649 actively exploited?

Active exploitation of CVE-2022-35649 has not been confirmed. Its EPSS score was 8.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-35649?

CVE-2022-35649 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2022-07-25
Fixed in4.0.2 · 3.11.8 · 3.9.15
WeaknessCWE-20 · CWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The vulnerability was found in Moodle, occurs due to improper input validation when parsing PostScript code. An omitted execution parameter results in a remote code execution risk for sites running GhostScript versions older than 9.50. Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Timeline

dates in UTC

2022-07-2516:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-35649?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-35649?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Moodle

Branch	Affected	Fixed in	Source
4.0	≥ 4.0.0, < 4.0.2	4.0.2	NVD
4.0	≥ 4.0, < 4.0.2	4.0.2	OSV
3.11	≥ 3.11.0, < 3.11.8	3.11.8	NVD
3.11	≥ 3.11, < 3.11.8	3.11.8	OSV
3.9	≥ 3.9.0, < 3.9.15	3.9.15	NVD
3.9	≥ 3.9, < 3.9.15	3.9.15	OSV

Fedoraproject fedora

Branch	Affected	Fixed in	Source
35.x	= 35	no fix published	NVD
36.x	= 36	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Moodle to 4.0.2 · 3.11.8 · 3.9.15

Advisories and patches

git.moodle.orgPatch · Vendor Advisory
moodle.orgVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedantoinenguyen-09/CVE-2022-35649

Sources

NVDCVSS 3.19.8read 2026-10-23
CNAweakness (CWE)CWE-94read 2026-10-23
NVDweakness (CWE)CWE-20read 2026-10-23
FIRST EPSSEPSS score8.6 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2022-07-25
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-35649?

Is CVE-2022-35649 actively exploited?

Active exploitation of CVE-2022-35649 has not been confirmed. Its EPSS score was 8.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-35649?

CVE-2022-35649 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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