Moodle through 2.5.2 allows remote authenticated administrators to execute arbitrary programs by configuring the aspell pathname and then tr
Moodle through 2.5.2 allows remote authenticated administrators to execute arbitrary programs by configuring the aspell pathname and then triggering a spell-check operation within the TinyMCE editor.
- Published
- Oct 31, 2013
- Updated
- Jun 16, 2026
- EPSS
- 42.6% · 99th percentile
- CWE
- CWE-94
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 18 / 40 · 4.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 13 / 30 · 42.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| moodle | moodle | cpe:2.3:a:moodle:moodle |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- moodle moodleup to 2.5.2 inclusive
- moodle moodle1.1.1
- moodle moodle1.2.0
- moodle moodle1.2.1
- moodle moodle1.3.0
- moodle moodle1.3.1
- moodle moodle1.3.2
- moodle moodle1.3.3
- moodle moodle1.3.4
- moodle moodle1.4.1
- moodle moodle1.4.2
- moodle moodle1.4.3
- moodle moodle1.4.4
- moodle moodle1.4.5
- moodle moodle1.5
- moodle moodle1.5.0
- moodle moodle1.5.1
- moodle moodle1.5.2
- moodle moodle1.5.3
- moodle moodle1.6.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Packagist | moodle/moodle | before 2.5.3 | 2.5.3 |
Same product
moodle: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-43425Moodle: remote code execution via calculated question types58Plan
- CVE-2021-36393In Moodle, an SQL injection risk was identified in the library fetching a user's recent courses.55Plan
- CVE-2022-0332A flaw was found in Moodle in versions 3.11 to 3.11.4.52Plan
- CVE-2022-35650The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions.45Plan
- CVE-2018-1133An issue was discovered in Moodle 3.x.45Plan
- CVE-2021-21809A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10.43Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Packagist:moodle/moodle | 2.5.3 | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | remote | 2013-10-31 |
| Metasploit module | exploit/multi/http/moodle_spelling_binary_rceMoodle Authenticated Spelling Binary RCEexploit | 2013-10-30 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploit-2 d
- First PoC-1 d
- Published
- TodaySep 30, 2026+4717 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- High
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-94 · Improper Control of Generation of Code ('Code Injection')CVSS vector
AV:N/AC:H/Au:S/C:P/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- packetstormsecurity.com/files/164479/Moodle-Authenticated-Spelling-Binary-Remote-Code-Execution.html
- community.rapid7.com/community/metasploit/blog/2013/10/30/seven-foss-disclosures-part-one
Vendor advisories and official records. Exploit/PoC links are deliberately left out.