Mahara up to 15.04.13/16.04.7/16.10.4/17.04.2 Registration 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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A vulnerability was found in Mahara up to 15.04.13/16.04.7/16.10.4/17.04.2 (Content Management System). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component Registration. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. As an impact it is known to affect integrity. An attacker might be able to inject arbitrary html and script code into the web site. This would alter the appearance and would make it possible to initiate further attacks against site visitors. The summary by CVE is:

Mahara 15.04 before 15.04.14 and 16.04 before 16.04.8 and 16.10 before 16.10.5 and 17.04 before 17.04.3 are vulnerable to a user submitting potential dangerous payload, e.g. XSS code, to be saved as their name in the usr_registration table. The values are then emailed to the the user and administrator and if accepted become part of the new user's account.

The bug was discovered 09/11/2017. The weakness was published 09/25/2017 (Website). The advisory is shared at This vulnerability is known as CVE-2017-9551 since 06/11/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 15.04.14, 16.04.8, 16.10.5 or 17.04.3 eliminates this vulnerability.




CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Cross site scripting
ATT&CK: T1059.007

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mahara 15.04.14/16.04.8/16.10.5/17.04.3


06/11/2017 🔍
09/11/2017 +92 days 🔍
09/25/2017 +14 days 🔍
09/25/2017 +0 days 🔍
09/26/2017 +1 days 🔍
11/19/2019 +784 days 🔍


Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9551 (🔍)


Created: 09/26/2017 09:33 AM
Updated: 11/19/2019 03:55 PM
Changes: (2) vulnerability_discoverydate advisory_confirm_url
Complete: 🔍


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