CVE-2021-26601Public exploitNetwork attack vector

Authenticated file deletion via unsanitized image path

Published Mar 28, 2022 · Updated Aug 3, 2024

Path traversal in ImpressCMS before 1.4.3 allows remote authenticated users to delete server files via the image_temp parameter. In libraries/image-editor/image-edit.php, image_temp is concatenated into a temporary-file path and passed to copy() and unlink() without removing traversal sequences. A logged-in attacker can escape the intended temporary directory and delete files writable by the web-server process; file contents are exposed only when directory listing is enabled.

CVSS severity8.1
High
EPSS probability3.24%
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 ImpressCMS before 1.4.3 allows remote authenticated users to delete server files via the image_temp parameter. In libraries/image-editor/image-edit.php, image_temp is concatenated into a temporary-file path and passed to copy() and unlink() without removing traversal sequences. A logged-in attacker can escape the intended temporary directory and delete files writable by the web-server process; file contents are exposed only when directory listing is enabled.

The record

CVE
CVE-2021-26601
Published
Mar 28, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1070.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 28, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1070.004File Deletion

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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