**H1** Critical Vulnerability Discovered in OpenStack Swift: Cross-Container Information Disclosure via Swift tempurl (CVE-2026-97149)

**Hacker Pranks** has been keeping you informed about the latest developments in the cybersecurity world, and today we're bringing you a critical vulnerability disclosure that affects OpenStack Swift, a popular open-source cloud storage system. A recent vulnerability, designated as OSSA-2026-041, has been discovered in OpenStack Swift, allowing attackers to disclose sensitive information across containers via the tempurl feature. This vulnerability has been assigned the Common Vulnerabilities and Exposures (CVE) identifier CVE-2026-97149.

The OpenStack Swift project provides a highly scalable, redundant, and durable object store. It's designed to be highly available and can be used as a back-end store for cloud computing platforms, content delivery networks, and other applications. However, with great functionality comes great responsibility, and the discovery of this critical vulnerability highlights the importance of regular security audits and patches.

**Vulnerability Details**

According to the OpenStack Security Advisory (OSSA) document, OSSA-2026-041, the vulnerability allows an attacker to disclose sensitive information across containers via the tempurl feature. Tempurl is a feature that generates temporary URLs for objects stored in the OpenStack Swift system. However, this feature also allows an attacker to craft a specially crafted tempurl that can disclose information from other containers, potentially leading to sensitive data exposure.

The vulnerability is caused by a weakness in the way OpenStack Swift handles tempurl requests. Specifically, when a tempurl is generated, the system does not properly validate the container name, allowing an attacker to craft a tempurl that points to an arbitrary container. This can lead to information disclosure, as the attacker can access sensitive data stored in other containers.

**Exploitation and Impact**

The exploitation of this vulnerability requires an attacker to have access to the OpenStack Swift system, either through a compromised account or through a separate vulnerability. Once the attacker has access, they can craft a specially crafted tempurl that points to an arbitrary container, allowing them to disclose sensitive information.

The impact of this vulnerability is significant, as it allows an attacker to access sensitive data stored in other containers. This could lead to unauthorized data disclosure, potentially compromising the confidentiality, integrity, and availability of the OpenStack Swift system.

**Mitigation and Patching**

To mitigate this vulnerability, users are advised to apply the patch provided by the OpenStack community. The patch addresses the weakness in the tempurl feature by properly validating the container name, preventing attackers from crafting specially crafted tempurls that can disclose information from other containers.

Additionally, users are advised to review their OpenStack Swift configuration and ensure that access controls are properly set up to prevent unauthorized access to sensitive data.

**Conclusion**

The discovery of the CVE-2026-97149 vulnerability in OpenStack Swift highlights the importance of regular security audits and patches. As a community, we must remain vigilant and proactive in identifying and addressing vulnerabilities in open-source software.

We urge all OpenStack Swift users to apply the patch provided by the OpenStack community to mitigate this vulnerability. Additionally, we recommend that users review their configuration and ensure that access controls are properly set up to prevent unauthorized access to sensitive data.

Stay informed, stay secure!

**Recommendation**

* Apply the patch provided by the OpenStack community to mitigate the CVE-2026-97149 vulnerability. * Review OpenStack Swift configuration and ensure that access controls are properly set up to prevent unauthorized access to sensitive data. * Regularly review and update software dependencies to ensure that all vulnerabilities are addressed.

**Sources**

* OpenStack Security Advisory (OSSA) document: OSSA-2026-041 * Common Vulnerabilities and Exposures (CVE) database: CVE-2026-97149 * OpenStack Swift documentation: Tempurl feature documentation

**About the Author**

Our cybersecurity expert has extensive experience in vulnerability research and has been following the OpenStack Swift project closely. They have a deep understanding of the OpenStack ecosystem and can provide insightful analysis on the latest developments in the cybersecurity world. Stay tuned for more informative and engaging content from **Hacker Pranks**!