CVE-2026-42140
Last modified
CVE-2026-42140 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. PlantUML Macro is a macro for rendering UML diagrams from simple textual schemes. Prior to version 2.4.1, the PlantUML Macro is vulnerable to Server-Side Request Forgery (SSRF). EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
PlantUML Macro is a macro for rendering UML diagrams from simple textual schemes. Prior to version 2.4.1, the PlantUML Macro is vulnerable to Server-Side Request Forgery (SSRF). The macro allows users to specify an alternative PlantUML server via the server parameter. However, the application does not validate the supplied URL. An attacker can supply an internal IP address or a malicious external URL. The XWiki server will attempt to connect to this URL to "render" the diagram. This issue has been patched in version 2.4.1.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-42140?
How severe is CVE-2026-42140?
How do I fix CVE-2026-42140?
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-42127The public dashboard query endpoint does not limit request b…7.5
- CVE-2026-42129A user with Viewer permissions can use a path traversal in t…7.7
- CVE-2026-4213A vulnerability was detected in D-Link DNS-120, DNR-202L, DN…9.8
- CVE-2026-42137Kirby is an open-source content management system. Prior to …6.5
- CVE-2026-42138Dify is an open-source LLM app development platform. Prior t…6.1
- CVE-2026-4214A flaw has been found in D-Link DNS-120, DNR-202L, DNS-315L,…9.8
- CVE-2026-42141Xibo is an open source digital signage platform with a web c…7.7
- CVE-2026-42142TypeBot is a chatbot builder tool. Prior to version 3.17.0, …7.1
- CVE-2026-42143Coolify is an open-source and self-hostable tool for managin…8.8
- CVE-2026-42144CImg Library is a C++ library for image processing. Prior to…6.1
- CVE-2026-42145Coolify is an open-source and self-hostable tool for managin…3.1
- CVE-2026-42146CImg Library is a C++ library for image processing. Prior to…5.5
Are you affected by CVE-2026-42140?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST