How severe is CVE-2026-68487?

CVE-2026-68487 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-68487 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-68487?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-68487 published?

CVE-2026-68487 was published on 2026-09-10.

CVE-2026-68487

CVE-2026-68487 is a critical-severity vulnerability with a CVSS 3.x base score of 9.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-36.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-36
Published: 2026-09-10
Last modified: 2026-09-10

Description

Path traversal in Plesk's Backup Manager causes arbitrary file write as root by an authenticated customer.

Frequently asked questions

What is CVE-2026-68487?: Path traversal in Plesk's Backup Manager causes arbitrary file write as root by an authenticated customer.
How severe is CVE-2026-68487?: CVE-2026-68487 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-68487 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-68487?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-68487 published?: CVE-2026-68487 was published on 2026-09-10.

References

https://support.plesk.com/hc/en-us/articles/43248841638551-Vulnerability-in-Plesk-s-Backup-Manager-unsigned-backup-header-allows-path-traversal

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