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Atlassian disclosed a critical Confluence vulnerability, CVE-2023-22515, that can let an attacker create unauthorized administrator accounts and potentially take over the entire environment. Atlassian assessed the flaw as likely falling between 9.0 and 10.0 in severity and urged defenders to restrict access to the vulnerable component until patches could be applied. Authorities warned that any internet-exposed vulnerable instance showing even minor anomalies should be treated as potentially compromised, with indicators including unexpected additions to the confluence-administrators group, unexplained user creation, requests to /setup/*.action, and evidence of /setup/setupadministrator.action in atlassian-confluence-security.log. Subsequent analysis indicated the flaw might also be exploitable without creating an administrator account, including through /server-info.action, and Microsoft reported signs of exploitation dating back to mid-September 2023.
JetBrains later released fixes for critical TeamCity authentication bypass vulnerabilities affecting all on-premises server installations through version 2023.11.3, resolving them in 2023.11.4. The company said an unauthenticated attacker could send specially crafted HTTP(S) requests to bypass authentication or gain administrator-level access, and exploitation attempts had already been observed. JetBrains updated and checked its cloud-hosted service, while defenders running on-premises TeamCity were told to patch immediately and review systems for compromise after updating, underscoring the ongoing risk from exposed enterprise collaboration and CI/CD platforms that can be seized through admin-level access flaws.
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6 events from the most recent confirmed update back to the earliest known activity.
At the time of JetBrains' March 2024 advisory, exploitation attempts had already been observed against the TeamCity authentication bypass flaws. Defenders were advised to update and investigate systems for signs of compromise.
JetBrains released TeamCity version 2023.11.4 to fix authentication bypass vulnerabilities affecting on-premises TeamCity servers up to version 2023.11.3. The company said cloud-hosted servers had already been updated and checked.
On 2024-01-16, Atlassian released security updates for multiple products including Confluence, Bitbucket, Jira, Bamboo, and Crowd. The advisory highlighted CVE-2023-22527 in Confluence as the most critical issue and said it had already been observed in December 2023, while supported Confluence versions were already fixed through regular updates.
An update citing Rapid7 analysis said CVE-2023-22515 might be exploitable without creating an administrator account, including via the /server-info.action path. This expanded the known technical understanding of how the flaw could be abused.
Atlassian disclosed CVE-2023-22515 affecting Confluence, a critical vulnerability that could let attackers create unauthorized administrator accounts and potentially take over the environment. Temporary mitigation guidance included restricting access to the vulnerable component until security updates could be installed.
A later update to the advisory said Microsoft researchers found signs that CVE-2023-22515 had been exploited as early as 2023-09-14. Microsoft also shared four IP addresses associated with exploit-related traffic.
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JetBrains has patched a high-severity vulnerability in TeamCity On-Premises, tracked as **`CVE-2026-44413`**, that can allow privilege escalation and expose parts of the TeamCity server API to unauthorized users. The company said affected deployments include TeamCity On-Premises **2025.11.4 and earlier**, and advised customers to upgrade to **TeamCity 2026.1** or apply the available security patch plugin. According to JetBrains, the flaw could expose sensitive data including API tokens, Git credentials, build secrets, logs, and user information, with higher risk in environments that permit inbound connections on non-standard ports or run build agents on the same host as the TeamCity server. The issue requires access to a TeamCity account, which attackers could obtain through brute force, credential stuffing, leaked credentials, social engineering, or enabled guest access, raising the prospect of follow-on compromise of cloud infrastructure, source code repositories, and software delivery pipelines. The disclosure comes against a backdrop of repeated TeamCity security incidents, including **`CVE-2024-27198`** and **`CVE-2024-27199`**, two critical flaws that allowed unauthenticated attackers to bypass authentication, take over servers, alter certificates and ports, and create supply-chain attack paths; those earlier bugs were fixed in **2023.11.4** after researchers warned they could lead to full server compromise.
Jun 29, 2026
Atlassian and Finland’s National Cyber Security Centre warned of multiple severe vulnerabilities in Atlassian products, led by **`CVE-2022-1471`**, a critical SnakeYAML deserialization flaw rated **CVSS 9.8** that can enable remote code execution across **Bitbucket, Confluence, Jira Core, Jira Software, Jira Service Management, Automation for Jira,** and the **Confluence Cloud Migration App**. Atlassian said its hosted **`atlassian.net`** cloud sites are not affected, but Data Center and Server deployments face broad exposure and should be upgraded immediately to fixed releases. The advisories also identified product-specific RCE issues in **Confluence Data Center and Server** (**`CVE-2023-22522`**), the **Assets Discovery** app (**`CVE-2023-22523`**), and **Atlassian Companion App for macOS** (**`CVE-2023-22524`**). Authorities urged organizations to install patched versions without delay and, where patching cannot be completed at once, remove vulnerable services from the public internet; Atlassian added that there is no mitigation for some affected products, while certain Jira and Jira Service Management environments can reduce risk by upgrading the **Automation for Jira** app to a fixed version.
Jun 29, 2026
JetBrains released fixes for two security vulnerabilities affecting **IntelliJ IDEA** and **TeamCity**, including **CVE-2026-59792**, a path traversal flaw in IntelliJ IDEA that can lead to remote code execution. The issue stems from project workspace ID handling and affects versions before **2026.1.4** and **2026.2**. The vulnerability is classified as `CWE-23` and carries a high-severity `CVSS 9.6` rating, with potential for significant confidentiality and integrity impact. JetBrains also patched **CVE-2026-59794**, a stored cross-site scripting flaw in **TeamCity** caused by unsanitized agent-reported data on the cloud profile page. That issue affects versions before **2026.1.2** and is rated high severity. Public reporting said no in-the-wild exploitation had been confirmed at the time of disclosure, but the flaws pose risk to developer endpoints and CI/CD environments, prompting organizations using the affected products to update to the fixed releases published on JetBrains' security advisories page.
Jul 16, 2026