Crucible
CVE-2020-29447
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK
2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application. |
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Alert meAnalysisAI
Affected versions of Atlassian Crucible allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the file upload request feature of code reviews. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
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 Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. Affected versions of Atlassian Crucible allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the file upload request feature of code reviews. The affected versions are before version 4.7.4, and from version 4.8.0 before 4.8.5. Affected products include: Atlassian Crucible. Version information: version 4.7.4.
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Affected versions of Atlassian Crucible allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the file upload request feature of code reviews. The affected versions are before version 4.7.4, and from version 4.8.0 before 4.8.5.
Threat Intelligence Overview
NVD
CVE.org
EPSS
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
Attack Technique
Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
Atlassian JIRA before 5.0.1; Confluence before 3.5.16, 4.0 before 4.0.7, and 4.1 before 4.1.10; FishEye and Crucible bef
This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center and
A vulnerability in multiple Atlassian products allows a remote, unauthenticated attacker to bypass Servlet Filters used
Atlassian Fisheye and Crucible versions less than 4.4.3 and version 4.5.0 are vulnerable to argument injection through f
A vulnerability in multiple Atlassian products allows a remote, unauthenticated attacker to cause additional Servlet Fil
The setup resources in Atlassian Fisheye and Crucible before version 4.8.1 allows remote attackers to complete the setup
The Microsoft Windows Installer for Atlassian Fisheye and Crucible before version 4.6.1 allows local attackers to escala
The mostActiveCommitters.do resource in Atlassian Fisheye and Crucible, before version 4.4.1 allows anonymous remote att
The MultiPathResource class in Atlassian Fisheye and Crucible, before version 4.4.1 allows anonymous remote attackers to
Affected versions of Atlassian Fisheye/Crucible allow remote attackers to achieve Regex Denial of Service via user-suppl
Affected versions of Atlassian Fisheye/Crucible allow remote attackers to impact the application's availability via a De
Fisheye and Crucible did not correctly check if a configured Mercurial repository URI contained values that the Windows
GitHub PoC
Exploit-DB