CVE-2026-5478Network attack vector

Unauthenticated file read and deletion via path traversal

Published Apr 20, 2026 · Updated Apr 20, 2026

Path traversal in WPEverest Everest Forms 3.4.4 and earlier allows remote attackers to read and delete local files via public forms. The upload handler treats attacker-controlled old_files URLs as server-side upload state, rewrites them into filesystem paths without canonicalization or a directory boundary, attaches the target to notification email, and later passes the path to unlink(). A reachable form must contain a file- or image-upload field with entry storage disabled; successful requests disclose local file contents and delete the targeted file.

CVSS severity8.1
High
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in WPEverest Everest Forms 3.4.4 and earlier allows remote attackers to read and delete local files via public forms. The upload handler treats attacker-controlled old_files URLs as server-side upload state, rewrites them into filesystem paths without canonicalization or a directory boundary, attaches the target to notification email, and later passes the path to unlink(). A reachable form must contain a file- or image-upload field with entry storage disabled; successful requests disclose local file contents and delete the targeted file.

The record

CVE
CVE-2026-5478
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
WPEverest
Product
Everest Forms
Classifications
CWE-22, T1005, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPEverest · Everest Formsversion=0 <=3.4.4

Published CVSS scores

8.1WordfenceCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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