CVE-2026-1311Network attack vector

Authenticated code execution via unchecked ZIP entry paths

Published Feb 26, 2026 · Updated Feb 26, 2026

Path traversal in BearsThemes Worry Proof Backup 0.2.4 and earlier allows remote authenticated users to write arbitrary server files. The backup upload path in inc/libs/upload-backup.php extracts ZIP entries without rejecting traversal sequences in entry names. Subscriber-level access is sufficient, and a PHP payload written beneath the web root grants code execution as the web server account.

CVSS severity8.8
High
EPSS probability0.73%
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 BearsThemes Worry Proof Backup 0.2.4 and earlier allows remote authenticated users to write arbitrary server files. The backup upload path in inc/libs/upload-backup.php extracts ZIP entries without rejecting traversal sequences in entry names. Subscriber-level access is sufficient, and a PHP payload written beneath the web root grants code execution as the web server account.

The record

CVE
CVE-2026-1311
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
BearsThemes
Product
Worry Proof Backup
Classifications
CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=* <=0.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BearsThemes · Worry Proof Backupversion=* <=0.2.4

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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