CVE-2021-24761Network attack vector

Admin file deletion via CSRF path traversal

Published Feb 1, 2022 · Updated Aug 3, 2024

Cross-Site Request Forgery in BestWebSoft Error Log Viewer before 1.1.2 allows remote attackers to delete arbitrary text files via a logged-in admin. The log-file deletion handler omits WordPress nonce validation and fails to constrain the requested path, so a forged request can traverse outside the intended log location. Exploitation requires a logged-in administrator's browser session and results in file deletion, not direct code execution.

CVSS severity6.5
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-Site Request Forgery in BestWebSoft Error Log Viewer before 1.1.2 allows remote attackers to delete arbitrary text files via a logged-in admin. The log-file deletion handler omits WordPress nonce validation and fails to constrain the requested path, so a forged request can traverse outside the intended log location. Exploitation requires a logged-in administrator's browser session and results in file deletion, not direct code execution.

The record

CVE
CVE-2021-24761
Published
Feb 1, 2022
Updated
Aug 3, 2024
Vendor
BestWebSoft
Product
Error Log Viewer
Classifications
CWE-352, CWE-22, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 1, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=1.1.2 <1.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BestWebSoft · Error Log Viewerversion=1.1.2 <1.1.2

Published CVSS scores

5.0NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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-352Cross-Site Request Forgery (CSRF)
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
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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