Elgg
CVE-2019-11016
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V3 - Web Frontend Security Redirect URL validation
MITRE ATT&CK
1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.1 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. |
| Exploit ScenarioDerived | A remote attacker could redirect users to malicious websites via URL manipulation by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Elgg before 1.12.18 and 2.3.x before 2.3.11 has an open redirect. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate redirect destinations against an allowlist, avoid using user input in redirect URLs.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in composer
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Open Redirect (CWE-601), which allows attackers to redirect users to malicious websites via URL manipulation. Elgg before 1.12.18 and 2.3.x before 2.3.11 has an open redirect. Affected products include: Elgg. Version information: before 1.12.18.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Elgg before 1.12.18 and 2.3.x before 2.3.11 has an open redirect.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Affected Products (CPE)NVD
elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor. Rated high severity (CVSS 7.5),
elgg is vulnerable to Authorization Bypass Through User-Controlled Key. Rated medium severity (CVSS 5.9), this vulnerabi
elgg is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). Rated medium
Cross-site scripting (XSS) vulnerability in the Twitter widget in Elgg before 1.7.17 and 1.8.x before 1.8.13 allows remo
engine/lib/users.php in Elgg before 1.8.5 does not properly specify permissions for the useradd action, which allows rem
Cross-site scripting (XSS) vulnerability in engine/lib/views.php in Elgg before 1.8.5 allows remote attackers to inject
engine/lib/access.php in Elgg before 1.8.5 does not properly clear cached access lists during plugin boot, which allows
Elgg's ImageService processes avatar uploads without validating source image dimensions prior to resizing, allowing auth
Exploit-DB