CVE-2026-20750 is a critical vulnerability identified in Gitea, a popular self-hosted Git service. This vulnerability allows unauthorized access to project modifications, where a user with project write access in one organization may inadvertently modify projects belonging to another organization. Given its CVSS score of 9.1, this vulnerability poses a significant risk to organizations using Gitea.
The implications of this vulnerability extend beyond mere unauthorized modifications; they can lead to data integrity issues and potential data breaches if not addressed promptly. Organizations using Gitea should be particularly vigilant, as the attack vector is classified as network-based with low complexity, meaning it could be exploited with minimal effort.
As of now, there is no known public exploit for this vulnerability, and it has not been included in the Known Exploited Vulnerabilities (KEV) catalog. However, the lack of active exploitation does not mitigate the urgency with which organizations should address this issue. Organizations should prioritize patching immediately.
The vulnerability was published on January 22, 2026, and the Gitea team has already addressed the issue in version 1.25.4. Therefore, organizations must ensure they are running the latest version to protect against this critical vulnerability.
Vulnerability Details
The official description states that Gitea does not properly validate project ownership in organization project operations. This failure allows users with project write access in one organization to potentially modify projects belonging to a different organization. The vulnerability has been classified under CWE-284, indicating improper access control.
According to the CVSS scoring system, the vulnerability has an attack vector of network, with low complexity and no privileges required. It has high confidentiality and integrity impacts, while the availability impact remains negligible. The publication date of the vulnerability is January 22, 2026.
Technical Analysis
The root cause of this vulnerability lies in Gitea's failure to properly validate project ownership when operations are being performed on organization projects. This lack of validation means that access controls are insufficient, allowing users to manipulate projects they should not have access to. The attack vector is network-based, presenting an opportunity for attackers to exploit this flaw remotely.
The complexity of the attack is low, meaning there are few barriers for an attacker to exploit this vulnerability. Importantly, no user interaction is required to carry out the attack. The confidentiality and integrity impacts are high, indicating that sensitive data could be exposed or modified without authorization. However, the availability impact is none, meaning the service itself remains operational despite potential unauthorized changes.
Risk & Impact Analysis
Risk to organizations includes unauthorized modifications to critical projects, which can result in data integrity issues and potential security breaches. The blast radius for this vulnerability is significant, as it impacts all organizations utilizing Gitea that have not upgraded to version 1.25.4 or later. The urgency for organizations is high given the critical nature of the vulnerability and the potential for exploitation if it remains unpatched.
Organizations should assess their current deployment of Gitea and prioritize patching in their immediate patch cycle to mitigate any associated risks. The critical severity status of this vulnerability necessitates swift action to ensure the security and integrity of organizational projects.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of Gitea prior to version 1.25.4. Organizations running earlier versions should take immediate steps to update their installations to mitigate this critical risk.
Mitigation & Remediation
Organizations must patch Gitea to version 1.25.4 or later to remediate this vulnerability. Additionally, organizations should consider implementing configuration hardening measures, such as restricting project access based on user roles and conducting regular reviews of permissions. For further assistance, organizations can utilize continuous penetration testing to ensure their security posture is robust against similar vulnerabilities.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized project modifications, which may include unexpected changes to project settings or configurations. Behavioral anomalies, such as users modifying projects they do not own, should also be flagged for review. Implementing network signatures to detect unusual access patterns can help in identifying potential exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-20750 lies in its demonstration of the risks associated with improper access control in collaborative environments such as Gitea. Organizations should learn from this vulnerability and reinforce their access control measures to prevent similar occurrences in the future. Security teams should consider adopting proactive measures, such as regular security assessments and vulnerability management programs, to enhance their overall security posture.
Given the critical nature of this vulnerability and the potential impacts on project integrity, organizations should always prioritize effective security testing strategies. Regular updates and continuous security assessments are essential to mitigate evolving threats and ensure a secure development environment.
Organizations can also benefit from engaging in penetration testing to identify and address similar vulnerabilities before they can be exploited.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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