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CVE-2020-25630

23
FAUCET Score

CVE-2020-25630 is a denial-of-service vulnerability in Moodle versions 3.5 through 3.9.1, where the platform failed to check the decompressed size of zip files against user quotas, potentially exhausting server resources. Rated 7.5 HIGH on CVSS, this vulnerability can be exploited remotely with low complexity and no user interaction, leading to a complete denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.5.0, < 3.5.14CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.7.0, < 3.7.8CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.8.0, < 3.8.5CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.9.0, < 3.9.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 49th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.9.2
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.8.5
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.7.8
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.5.14

Vendor Advisories (1)

composerGHSA-66xp-28cq-mrf2high

Moodle Denial of Service

May 24, 2022

References

moodle.org / mod/forum/discuss.php
PatchVendor Advisory