CVE-2026-24775 is a medium-severity vulnerability affecting OpenProject, an open-source, web-based project management software. This vulnerability allows for potential exploitation due to an improper validation issue in the new collaborative document editor based on BlockNote. In OpenProject version 17.0.0, a custom extension was added to facilitate mentioning work packages directly within documents. However, this extension failed to correctly validate the work package ID, permitting attackers to generate documents with relative links. When those documents are opened, they could trigger arbitrary `GET` requests to any URL within the OpenProject instance.
The vulnerability was identified and patched in version 0.0.22 of op-blocknote-extensions, included with OpenProject version 17.0.2. For organizations unable to upgrade immediately to version 17.0.2, it is recommended that administrators disable collaborative document editing from the Settings menu.
Risk to organizations includes potential unauthorized access to sensitive information through manipulated document links, leading to data breaches. Given the medium severity rating with a CVSS score of 6.3, organizations should address this vulnerability in their priority patch cycles to mitigate risks.
As of the latest intelligence data, there is no known exploit available for this vulnerability, which provides organizations with a window to apply necessary patches and configurations.
Organizations should prioritize patching immediately to eliminate the risk posed by this vulnerability. Regular updates and assessments of security configurations are essential to maintaining the integrity of OpenProject deployments.
Vulnerability Details
The vulnerability is classified under CWE-345, which relates to product-specific issues regarding improper input validation. The official description indicates that the issue arises due to the extension's failure to validate the work package ID effectively. The CVSS score of 6.3 indicates a medium severity level, reflecting the potential impacts of exploitation, which include low integrity and high availability impact.
Technical Analysis
The root cause of CVE-2026-24775 lies in the BlockNote editor's inability to properly validate the work package ID. Attackers can exploit this vulnerability by crafting documents containing relative links that, when accessed, initiate unauthorized requests to any endpoint of the OpenProject instance. The attack vector is classified as NETWORK, and the attack complexity is LOW, as an attacker requires only limited privileges to initiate the exploitation. User interaction is required to open the document, which may lead to the execution of arbitrary requests.
The impacts of this vulnerability are multifaceted. The confidentiality impact is rated as NONE, as unauthorized access does not directly expose data. However, the integrity impact is LOW, indicating potential manipulation of document content. The availability impact is rated HIGH, as the vulnerability could lead to denial of service through excessive requests. Overall, the risk profile emphasizes the importance of immediate remediation efforts.
Risk & Impact Analysis
With the increasing reliance on web-based project management tools like OpenProject, the risk posed by CVE-2026-24775 could be significant. The ability for an attacker to manipulate document links and initiate unauthorized requests can lead to broader security incidents within organizations, especially those handling sensitive project data.
Organizations using affected versions of OpenProject must assess their deployment configurations and prioritize patching efforts. The patch is available in OpenProject version 17.0.2, and failure to remediate could expose organizations to potential exploitation in the future.
The urgency of addressing this vulnerability is underscored by its medium severity rating and the potential impact on availability. Organizations should address this in their patch cycle to maintain security posture and operational integrity.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following version of OpenProject is affected by CVE-2026-24775: All versions prior to vendor patch version 17.0.2. Users should ensure their installations are updated to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
To remediate CVE-2026-24775, organizations should upgrade to OpenProject version 17.0.2 or later. If immediate upgrading is not feasible, administrators can disable collaborative document editing in the application settings to mitigate the risk of exploitation. Additionally, regular security assessments and monitoring of the OpenProject instance are recommended to identify any potential vulnerabilities.
Organizations may explore services such as penetration testing to validate the security posture and effectiveness of their remediation efforts.
Detection Guidance
Organizations should monitor logs for unusual activity related to document access and API calls. Behavioral anomalies, such as unexpected `GET` request patterns or unauthorized access attempts to the OpenProject instance, should be investigated promptly. Establishing network signatures for the OpenProject API endpoints could enhance detection capabilities.
AppSecure Threat Intelligence Insight
CVE-2026-24775 highlights the importance of input validation in web applications, especially those allowing user-generated content. The improper validation leading to this vulnerability serves as a reminder for development teams to incorporate rigorous checks to prevent similar issues in the future.
The trend of vulnerabilities resulting from inadequate validation processes underscores the need for security-first development practices. Organizations should consider adopting comprehensive security frameworks that prioritize secure coding practices and regular code reviews.
For more insights on securing their applications, organizations may refer to resources such as the penetration testing methodology guide, which provides best practices for identifying and remediating vulnerabilities.
Additionally, exploring vulnerability management program design can further enhance an organization's ability to proactively address future vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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