CVE-2013-4341

MEDIUMCVSS v2 · 4.34.3—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.3 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:M/Au:N/C:N/I:P/A:N. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 21.9% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 22%CVSS v2: 4.3Exploit: Metasploit · epss top5pct · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v2.0 (legacy)
4.3MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.3(low)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity43% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
22%
EPSS %ILE
97%
KEV
Not listed

Published

September 16, 2013

Last Modified

April 29, 2026

References (6)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 19× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 103 total refreshes for this CVE.

  1. 2026-08-21 23:44 UTCEPSS rescore
  2. 2026-08-20 22:50 UTCEPSS rescore
  3. 2026-08-19 16:59 UTCEPSS rescore
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  15. 2026-07-30 01:26 UTCEPSS rescore
  16. 2026-07-28 15:31 UTCEPSS rescore
  17. 2026-07-26 13:48 UTCEG score recompute▲ 4.30
  18. 2026-07-25 14:12 UTCEPSS rescore
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  20. 2026-07-23 01:10 UTCEG score recompute
  21. 2026-07-23 00:14 UTCEG score recompute
  22. 2026-07-22 21:52 UTCEG score recompute
  23. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-07-20 17:03 UTCEPSS rescore
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  40. 2026-06-13 22:57 UTCEPSS rescore
  41. 2026-06-12 23:08 UTCEPSS rescore
  42. 2026-06-11 13:56 UTCEPSS rescore
  43. 2026-06-10 13:18 UTCEPSS rescore
  44. 2026-06-08 14:14 UTCEPSS rescore
  45. 2026-06-07 15:22 UTCEPSS rescore
  46. 2026-06-06 13:45 UTCEPSS rescore
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  58. 2026-05-29 13:41 UTCEPSS rescore
  59. 2026-05-29 13:41 UTCEPSS rescore
  60. 2026-05-28 22:28 UTCEG score recompute
  61. 2026-05-28 22:28 UTCGHSA enrichment
  62. 2026-05-28 13:42 UTCEPSS rescore
  63. 2026-05-28 13:42 UTCEPSS rescore
  64. 2026-05-28 13:42 UTCEPSS rescore
  65. 2026-05-27 13:38 UTCEPSS rescore
  66. 2026-05-27 13:38 UTCEPSS rescore
  67. 2026-05-24 16:43 UTCEPSS rescore
  68. 2026-05-22 21:15 UTCEPSS rescore
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  71. 2026-05-21 22:39 UTCEPSS rescore
  72. 2026-05-20 22:37 UTCEPSS rescore
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  74. 2026-05-20 11:21 UTCEPSS rescore
  75. 2026-05-20 11:21 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/multi/http/moodle_spelling_binary_rce✓ verified
    First seen Oct 30, 2013

    Moodle Authenticated Spelling Binary RCE

    Open source ↗
  • Exploit-DBEDB-28174
    First seen Sep 9, 2013

    Moodle 2.3.8/2.4.5 - Multiple Vulnerabilities

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2013-4341?
CVE-2013-4341 is a medium vulnerability published on September 16, 2013. 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.
When was CVE-2013-4341 disclosed?
CVE-2013-4341 was first published in the National Vulnerability Database on September 16, 2013, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-4341 actively exploited?
CVE-2013-4341 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22% probability of exploitation in the next 30 days, which ranks it in the top 2.5% of all scored CVEs.
How do I remediate CVE-2013-4341?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-4341, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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