Home/CVE/Recursive rendering of Mustache template helpers containing user input could, in some cases, result in an XSS risk or a
CVE

CVE-2022-40313

Recursive rendering of Mustache template helpers containing user input could, in some cases, result in an XSS risk or a

Recursive rendering of Mustache template helpers containing user input could, in some cases, result in an XSS risk or a page failing to load.

HIGH · CVSS 7.1 EPSS 0.0036
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

5
moodle>= 3.9.0 and < 3.9.17
moodle>= 3.11.0 and < 3.11.10
moodle>= 4.0.0 and < 4.0.4
fedoraproject extra packages for enterprise linuxall versions
fedoraproject fedoraall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist moodle/moodle HIGH fixed in 3.9.17
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · patrick@puiterwijk.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Sep 2022 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=2128146Issue TrackingThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=438392PatchVendor Advisory
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