Acronis Backup Incorrect Default Permissions Vulnerability

Acronis Backup

Acronis Backup plugin for cPanel & WHM and extension for Plesk contains an incorrect default permissions vulnerability that could allow for privilege escalation. Added to CISA KEV on 2026-09-16 (federal deadline 2026-09-19).

First seen: 16 Sept 2026
Last update: 16 Sept 2026, 12:00 UTC
Identifiers: CVE-2026-87886
Source: CISA KEV

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Acronis Backup Incorrect Default Permissions Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Acronis Backup
Ids: CVE-2026-87886

Acronis Backup plugin for cPanel & WHM and extension for Plesk contains an incorrect default permissions vulnerability that could allow for privilege escalation. Added to CISA KEV on 2026-09-16 (federal deadline 2026-09-19).

## Steps
1. Search the repo, its CI and infra config for Acronis Backup. If present, report the version in use and whether it's affected.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-87886") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-87886 https://security-advisory.acronis.com/advisories/SEC-10986
https://pwned.coffee/i/acronis-backup-incorrect-default-permissions-vulnerabili-cve-2026-87886

Sources

Totalone hot coffee