WordPress security changelog
HIGH CVE-2019-25779 Deferred

Diarise: Unauthenticated file disclosure

WooThemes Diarise through 1.5.9 contains a file read vulnerability that allows unauthenticated attackers to read arbitrary files through the calendar parameter of download.php. Attackers can send GET requests with file:// scheme paths to the calendar parameter to disclose sensitive files like /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19. Other endpoint, parameter, role or implementation details not named in this export are not established by this record. Affected versions: at most 1.5.9. These observations are historical, not evidence of current active exploitation.

CVE / CNA score 8.7 CVSS 4.0 · disclosure@vulncheck.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Diarise
Plugin slug
diarise
Affected
<= 1.5.9
Safe version
See mitigation notes
Published
Oct 22, 2026
Weakness
CWE-22 — Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

This CVE was published Oct 22, 2026 and is one of 1 known issue for this theme.

What to do

Update, patch or deactivate.

This archive could not verify a fixed version because current official author release notes could not be retrieved or located. This archive's uncertainty does not establish that the vendor has not fixed the issue. Restrict or disable the affected feature where warranted and consult the author. Constrain file operations to authorized, server-selected targets, verify resolved-path containment and keep untrusted uploads non-executable. The source marks this component unsupported when assigned; a historical fixed boundary does not establish current support. Prefer removal or migration to a maintained alternative.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

WooThemes Diarise through 1.5.9 contains a file read vulnerability that allows unauthenticated attackers to read arbitrary files through the calendar parameter of download.php. Attackers can send GET requests with file:// scheme paths to the calendar parameter to disclose sensitive files like /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.

CVE / CNA vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

References

Primary and upstream sources