Path Traversal in sapper

Description

Versions of sapper prior to 0.27.11 are vulnerable to Path Traversal. It is possible to access sensitive files on the server through HTTP requests containing URL-encoded ../.

Recommendation

Update the sapper package to the latest compatible version. Followings are version details:

• Affected version(s): < 0.27.11
• Patched version(s): 0.27.11

References

• GHSA-f3vw-587g-r29g
• www.npmjs.com
• CWE-22
• OWASP 2021-A1

Related Issues

• Path Traversal in zero - Vulnerability
• mapshaper Path Traversal vulnerability - CVE-2024-1163
• liquidjs has a path traversal fallback vulnerability - CVE-2026-30952
• jsPDF has Local File Inclusion/Path Traversal vulnerability - CVE-2025-68428

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Tags:

npm

sapper