CVE-2013-4341Moodle XSS
Multiple cross-site scripting (XSS) vulnerabilities in Moodle through 2.2.11, 2.3.x before 2.3.9, 2.4.x before 2.4.6, and 2.5.x before 2.5.2 allow remote attackers to inject arbitrary web script or HTML via a crafted blog link within an RSS feed.
Published Sep 16, 2013 · Updated Apr 28, 2026 · Also known as UBUNTU-CVE-2013-4341
Key Facts
Routine patching- CVE-2013-4341 is a medium-severity vulnerability (CVSS 4.3 v2) affecting Moodle.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 22% probability of exploitation in the next 30 days.
- Fixed versions are available, including Moodle 2.2.11.
- Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
Scores
CVSS v2
4.3
AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS (30-day exploit likelihood)
22%
Higher than 97.6% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
52/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
3
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
Multiple cross-site scripting (XSS) vulnerabilities in Moodle through 2.2.11, 2.3.x before 2.3.9, 2.4.x before 2.4.6, and 2.5.x before 2.5.2 allow remote attackers to inject arbitrary web script or HTML via a crafted blog link within an RSS feed.
Affected Products
18 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| MoodleMoodle | 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7 | 2.2.11 |
Patched Releases
Moodle
2.2.11
Timeline
Publicly disclosed
Sep 16, 2013
Last updated
Apr 28, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- advisoryubuntu.com · CVE-2013-4341
- advisorycve.org · CVERecord
- advisorygit.moodle.org · gw
- advisorymoodle.org · discuss.php
- exploitpacketstormsecurity.com · Moodle-Authenticated-Spelling-Binary-Remote-Cod…
FAQ
Common Questions.
Multiple cross-site scripting (XSS) vulnerabilities in Moodle through 2.2.11, 2.3.x before 2.3.9, 2.4.x before 2.4.6, and 2.5.x before 2.5.2 allow remote attackers to inject arbitrary web script or HTML via a crafted blog link within an RSS feed.
Affected: Moodle versions 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Moodle 2.2.11.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
Is CVE-2013-4341 On Your Attack Surface?
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