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Vulnerabilities

Vulnerability · CVE-2026-3339

The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the AJAX action.

Published Mar 21, 2026 · catalog updated Jun 17, 2026 · The Keep Backup Daily

Check if you run it

No confirmed exploitation is on record for CVE-2026-3339. EPSS is 0.44%. Act only if a listed version of The Keep Backup Daily is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The Keep Backup Daily).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.44%
Remediation
Version ranges on file
Affected products
stated named in the record

The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the AJAX action. This is due to insufficient validation of the parameter, which is only sanitized with - a function that does not strip path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to list the contents of arbitrary directories on the server outside of the intended uploads directory.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated named in the record<= 2.1.1

How to fix CVE-2026-3339

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-3339. EPSS is 0.44%. Act only if a listed version of The Keep Backup Daily is installed.

Which versions are affected?

Compare what you have installed with named in the record <= 2.1.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.44%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 21, 2026 · NIST NVD

    Detected

    The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the AJAX action. This is due to insufficient validation of the parameter, which is only sanitized with - a function that does not strip path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to list the

  2. Jun 17, 2026 · NIST NVD

    Updated

    The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the AJAX action. This is due to insufficient validation of the parameter, which is only sanitized with - a function that does not strip path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to list the

Sources

  • CVE.orgVulnerability recordCVE-2026-3339

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-3339

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-3339

    The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the AJAX action. This is due to insufficient validation of the parameter, which is only sanitized with `sanitize_tex

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.