High SEVERITY — Vulnerability

CVE-2026-53779 — WebP Server Go through 0.14.4 contains a path traversal vulnerability on Windows that allows unauthenticated attackers t

WebP Server Go through 0.14.4 contains a path traversal vulnerability on Windows that allows unauthenticated attackers to read files outside the configured IMG_PATH directory by sending requests with percent-encoded backslashes (%5C) that bypass the path.Clean() sanitization in handler\/router.go. Attackers can exploit the discrepancy between Go's forward-slash-only path normalization and Windows file system APIs that treat backslashes and forward slashes as equivalent to acce

Platform
Windows Server
CVE Record
CVE-2026-53779
CVSS Score
8.7/10
Published
22 June 2026
Views
3
Primary source: Review the official advisory at nvd.nist.gov Kaynağa Git

Summary

WebP Server Go through 0.14.4 contains a path traversal vulnerability on Windows that allows unauthenticated attackers to read files outside the configured IMG_PATH directory by sending requests with percent-encoded backslashes (%5C) that bypass the path.Clean() sanitization in handler\/router.go. Attackers can exploit the discrepancy between Go's forward-slash-only path normalization and Windows file system APIs that treat backslashes and forward slashes as equivalent to access arbitrary files on the host filesystem accessible to the server process.

Assessment

  • CVE: CVE-2026-53779
  • CVSS base score: 8.7
  • Vector: CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:N\/UI:N\/VC:H\/VI:N\/VA:N\/SC:N\/SI:N\/SA:N\/E:X\/CR:X\/IR:X\/AR:X\/MAV:X\/MAC:X\/MAT:X\/MPR:X\/MUI:X\/MVC:X\/MVI:X\/MVA:X\/MSC:X\/MSI:X\/MSA:X\/S:X\/AU:X\/R:X\/V:X\/RE:X\/U:X
  • Source: [NVD entry](https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-53779)

References

  • [github.com](https:\/\/github.com\/webp-sh\/webp_server_go\/commit\/eb3b5f9289b331cb639cd610b0d1c532d2cc24e0)
  • [github.com](https:\/\/github.com\/webp-sh\/webp_server_go\/pull\/451)
  • [www.vulncheck.com](https:\/\/www.vulncheck.com\/advisories\/webp-server-go-path-traversal-via-backslash-encoding-on-windows)

Action

  • Verify affected systems in your inventory
  • Apply the vendor patch during a maintenance window
  • Restrict access at the network layer until the patch is applied

Windows Server — Related Advisories

VIEW ALL →
Windows Server 16 Jul 2026
Critical · 9.8

CVE-2026-45695 — Kopia is a cross-platform backup tool for Windows, macOS, and Linux with fast incremental backups, client-side end-to-en

Kopia is a cross-platform backup tool for Windows, macOS, and Linux with fast incremental backups, client-side end-to-end encryption, compression, and data deduplication. Prior to 0.23.0, Kopia's HTTP server started with --without-password accepts unauthenticated requests to /api/v1/repo/exists and forwards attacker-supplied SFTP storage configuration to blob.NewStorage, where externalSSH: true and sshArguments containing -oProxyCommand=<cmd> can cause exec.CommandContext("ss

CVE-2026-45695 Vulnerability 3
Windows Server 15 Jul 2026
High · 8.5

CVE-2026-40952 — CVE-2026-40952 is a privilege misconfiguration in the Secure Access installer for the Windows client and server prior to

CVE-2026-40952 is a privilege misconfiguration in the Secure Access installer for the Windows client and server prior to version 14.55. Attackers with local access to the client or server can use it to elevate privileges to Administrator when Secure Access is installed in a non-default location.

CVE-2026-40952 Vulnerability 3
Windows Server 14 Jul 2026
Critical · 9.8

CVE-2026-47429 — Vitest is a testing framework powered by Vite.

Vitest is a testing framework powered by Vite. Prior to 3.2.5 and 4.1.0, the Vitest UI\/API server on Windows used isFileServingAllowed incorrectly for \/__vitest_attachment__, allowing \\?\\..\\ path traversal to read files outside the project; exposed API write and rerun features such as saveTestFile and rerun could also allow arbitrary script execution. This issue is fixed in versions 3.2.5 and 4.1.0.

CVE-2026-47429 Vulnerability 1