# CVE-2026-87898

Authenticated OS command injection in Plesk allows root code execution

- Page: https://www.vulneraibility.com/cve/CVE-2026-87898
- CVSS: 9.4
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 1.07% (percentile 65.1)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-09-23)
- Weakness: CWE-78
- Published: 2026-09-23

## Affected versions

- WebPros Plesk extension "Site Import": affected >= 1.6.6 and <= 1.12.1; fixed in < 1.12.2

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated remote OS command injection -> arbitrary code execution as root; full system and hosted-site compromise.

## Action

Immediate action required

## Recommendation

Apply vendor patch/mitigations ASAP; restrict admin access, enable MFA, isolate hosts.

## References

- [other] https://support.plesk.com/hc/en-us/articles/43641151026583

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.