CVE-2020-20495Public exploitNetwork attack vector

Authenticated ZIP deletion via backup path traversal

Published Aug 31, 2021 · Updated Aug 4, 2024

Path traversal in Bludit 3.13.0's backup plugin allows remote authenticated users to delete arbitrary ZIP files through the admin panel. The pluginBackup deleteBackup method appends the unvalidated deleteBackup value and .zip to its workspace path before passing it to Filesystem::rmfile. A valid administrator session and CSRF token are required; traversal sequences can escape the backup workspace and delete a chosen ZIP file, disrupting or corrupting site data.

CVSS severity9.1
Critical
EPSS probability1.51%
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 Bludit 3.13.0's backup plugin allows remote authenticated users to delete arbitrary ZIP files through the admin panel. The pluginBackup deleteBackup method appends the unvalidated deleteBackup value and .zip to its workspace path before passing it to Filesystem::rmfile. A valid administrator session and CSRF token are required; traversal sequences can escape the backup workspace and delete a chosen ZIP file, disrupting or corrupting site data.

The record

CVE
CVE-2020-20495
Published
Aug 31, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1485
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 31, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
5.8NVDAV:N/AC:M/Au:N/C:N/I:P/A:P

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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1485Data Destruction

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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