MCP Atlassian: DNS-rebinding TOCTOU bypass of the SSRF fix (CVE-2026-27826)

Summary GHSA-7r34-79r5-rcc9's fix added validateurlforssrf, which resolves the attacker-controlled X-Atlassian-Jira,Confluence-Url header host once at middleware time and trusts the result. But the outbound request is later built with the raw hostname and re-resolves at connect time with no IP...

GHSA-4XGF-CPJX-PC3J vulnerabilities

Vulnerabilities for packages: vllm-openai-cuda-13.0, airflow, mcp-atlassian, airflow-core, semgrep, prefect-fips, tritonserver-backend-vllm-cuda-12.9, vllm-cuda-13.2, prefect, litellm, open-webui, azureml-inference-server-http-fips, azureml-inference-server-http, lmcache-cuda-12.8,...

CVE-2026-6673

Mattermost versions 11.7.x = 11.7.0, 11.6.x = 11.6.2, 11.5.x = 11.5.5, 10.11.x = 10.11.17 fail to authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret and disrupt the Jira integration via POST to /ac/installed during the...

EUVD-2026-38249

Mattermost versions 11.7.x = 11.7.0, 11.6.x = 11.6.2, 11.5.x = 11.5.5, 10.11.x = 10.11.17 fail to authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret and disrupt the Jira integration via POST to /ac/installed during the...

CVE-2026-6673 Mattermost Jira plugin had unauthenticated {{/ac/installed}} lifecycle callback during pending Jira Cloud install

Mattermost versions 11.7.x = 11.7.0, 11.6.x = 11.6.2, 11.5.x = 11.5.5, 10.11.x = 10.11.17 fail to authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret and disrupt the Jira integration via POST to /ac/installed during the...

PT-2026-51316

Name of the Vulnerable Software and Affected Versions Mattermost version 11.7.0 Mattermost version 11.6.2 Mattermost version 11.5.5 Mattermost version 10.11.17 Description Remote unauthenticated attackers can inject a rogue sharedSecret and disrupt the Jira integration. This occurs during the...

MAL-2026-5891 Malicious code in atlassian-forge-skills (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 0ca0f4b99cda621977551550ed678ad77ee82827714acb9d08534f53b0642e3c Package impersonates an internal Atlassian Forge dependency unscoped name atlassian-forge-skills, description 'Internal package', generic author...

Malicious code in atlassian-forge-skills (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 0ca0f4b99cda621977551550ed678ad77ee82827714acb9d08534f53b0642e3c Package impersonates an internal Atlassian Forge dependency unscoped name atlassian-forge-skills, description 'Internal package', generic author...

CVE-2026-12225

syracom AG Secure Login 2FA for Atlassian Jira, Confluence, and Bitbucket 3.4.0.x contains an authentication bypass vulnerability. An attacker with valid credentials for a user account can bypass the two-factor authentication flow by sending HTTP requests with a crafted User-Agent header containi...

EUVD-2026-37066

syracom AG Secure Login 2FA for Atlassian Jira, Confluence, and Bitbucket 3.4.0.x contains an authentication bypass vulnerability. An attacker with valid credentials for a user account can bypass the two-factor authentication flow by sending HTTP requests with a crafted User-Agent header containi...

Atlassian Confluence Server - Improper Authorization

All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. There is no impact to confidentiality as an attacker cannot exfiltrate any instance data. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an...

Atlassian Confluence - Remote Code Execution

A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data Center and Server...

PT-2026-49655

Name of the Vulnerable Software and Affected Versions syracom AG Secure Login 2FA for Atlassian Jira, Confluence, and Bitbucket versions 3.4.0.x Description An authentication bypass exists where an attacker with valid user credentials can circumvent the two-factor authentication 2FA flow. By...

BASM (Broken Authentication & Session Management) org.apache.tomcat:tomcat-catalina Dependency in Jira Software Data Center and Server

This is a vulnerability in a non-Atlassian dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity BASM Broken Authentication & Session Management vulnerability was introduced in versions 9.12.1, 9.16.0, 9.17.0, 10.0.1, 10.1.1,...

Authentication Bypass org.apache.tomcat:tomcat-catalina Dependency in Jira Service Management Data Center

This is a vulnerability in a non-Atlassian dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This Critical severity Authentication Bypass vulnerability was introduced in versions 5.16.0, 5.17.0, 10.0.1, 10.1.1, 10.2.0, 10.3.0, 10.4.0, 10.5.0,...

PT-2026-45412

🔒 CyberSecurity CVE-2026-37890: Atlassian Confluence OGNL Injection — Detection and Emergency P… "Critical OGNL injection flaw CVE-2026-37890 in Atlassian Confluence…" 🔗 https://t.co/RLZcRST2d3 CyberSecurity ThreatIntel penetrationtesting redteam offensivesecurity...

Malicious code in @flipbit2-bb/test-auth-state (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 52ba26e89d1aca1f10772bf4cc8c9b23a436a39a8442fdf4ba9abf6c4c890e63 On npm install, a postinstall script phone-home.js collects os.hostname, os.userInfo.username, process.platform + os.release, a timestamp, and a...

MAL-2026-4389 Malicious code in @flipbit2-bb/test-auth-state (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 52ba26e89d1aca1f10772bf4cc8c9b23a436a39a8442fdf4ba9abf6c4c890e63 On npm install, a postinstall script phone-home.js collects os.hostname, os.userInfo.username, process.platform + os.release, a timestamp, and a...

Malicious Package

Overview atlassian-jenkins-helper-utils is a malicious package. This package contains malicious code, and its content was removed from the official package manager. While this package might be attempting to impersonate a valid organization, there is no connection between that organization and thi...

MAL-2026-3781 Malicious code in atlassian-jenkins-helper-utils (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 526951af835c5c23fe1c8c7b4d5180e324baeae2de710b4a3d862c2e372da4af The package atlassian-jenkins-helper-utils was found to contain malicious code. Source: ghsa-malware...