Arbitrary Code Injection Affecting langfuse-4-worker package, versions <4.21.0-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-MINIMOSLATEST-LANGFUSE4WORKER-19271826
- published27 Aug 2026
- disclosed6 Aug 2026
Introduced: 6 Aug 2026
NewCVE-2026-50159 (opens in a new tab)How to fix?
Upgrade Minimos:latest langfuse-4-worker to version 4.21.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream langfuse-4-worker package and not the langfuse-4-worker package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid is vulnerable to CSS injection via sibling combinator selectors generated from diagram-supplied class or id names. An attacker who can supply diagram text can inject arbitrary CSS into the rendered page, potentially altering the appearance or behavior of unrelated page elements. This issue is fixed in versions 10.9.8 and 11.16.1.
References
- https://www.cve.org/CVERecord?id=CVE-2026-50159
- https://github.com/advisories/GHSA-6x64-9x62-f2gx
- https://osv.dev/vulnerability/MINI-9wwq-4pr7-w24w
- https://osv.dev/vulnerability/CVE-2026-50159
- https://github.com/mermaid-js/mermaid/commit/12d472c9ed43f94814b110da8d7a9ae6dd5266ed
- https://github.com/mermaid-js/mermaid/commit/7e83f1533318b307764d961906a73377266f4c5e
- https://github.com/mermaid-js/mermaid/pull/8022
- https://github.com/mermaid-js/mermaid/releases/tag/mermaid@11.16.1
- https://github.com/mermaid-js/mermaid/releases/tag/v10.9.8
- https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6x64-9x62-f2gx