CVE-2021-36395

highpriority · track · 30EPSS 0.007 · 54 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.73% (54th) EPSS
CVSS 7.5 · high
Is it mine?
12 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

In Moodle, the file repository's URL parsing required additional recursion handling to mitigate the risk of recursion denial of service.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.3–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.14.3mediumAV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Lsecondary · FSTEC (BDU) RU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-674USprimaryCWE-400USCWE-400USCWE-674USCWE-674US
04

affected products (12)

Products and version ranges known to be affected.

05

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2023-0579Moodle: Mehrere SchwachstellenDeutsch2023-03-06csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Moodle ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen, Dateien zu manipulieren, Sicherheitsvorkehrungen zu umgehen oder einen Cross-Site-Scripting-Angriff durchzuführen.

  • GHSA-273w-7fxj-pcp6Moodle vulnerable to Uncontrolled Resource Consumption2023-03-06ghsa · osvUS

    In Moodle, the file repository's URL parsing required additional recursion handling to mitigate the risk of recursion denial of service.

  • BIT-moodle-2021-363952024-03-06vendor · osvUS

    In Moodle, the file repository's URL parsing required additional recursion handling to mitigate the risk of recursion denial of service.

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvnvdcert_bundNVDCVE.orgMITRE
published 2023-03-06modified 2026-06-17
09

references (6)

External citations — patches, advisories, analysis.

scry

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