Moodle Database Auto-linking cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Moodle. Affected by this vulnerability is an unknown functionality of the component Database Auto-linking. Such manipulation leads to cross site scripting. This vulnerability is traded as CVE-2023-28331. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Moodle (Learning Management Software) (affected version unknown). It has been rated as problematic. Affected by this issue is an unknown functionality of the component Database Auto-linking. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

The weakness was shared 03/24/2023. The advisory is shared for download at moodle.org. This vulnerability is handled as CVE-2023-28331 since 03/14/2023. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/06/2025). The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-0917). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/14/2023 🔍
03/24/2023 +10 days 🔍
03/24/2023 +0 days 🔍
07/06/2025 +835 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: FEDORA-2023-d9c13996b2
Status: Confirmed

CVE: CVE-2023-28331 (🔍)
GCVE (CVE): GCVE-0-2023-28331
GCVE (VulDB): GCVE-100-223784
EUVD: 🔍

Entryinfo

Created: 03/24/2023 07:39
Updated: 07/06/2025 08:52
Changes: 03/24/2023 07:39 (37), 04/14/2023 06:16 (1), 04/14/2023 06:30 (11), 07/06/2025 08:52 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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