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7.5

CVE-2018-13056: zzcms 8.3 can delete any file through del.php

CVE-2018-13056 · published 8 years ago
Summary

The file‑deletion function in zzcms version 8.3 lets an attacker remove any file on the server by inserting a path into the system’s database and then triggering an image‑upload request. This could be used to erase important files such as the install.lock file, giving the attacker further access to the database. Update to a patched version of zzcms or restrict access to the /user/del.php page and validate database inputs to stop the exploit.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
zzcms zzcms 8.3
cpe:2.3:a:zzcms:zzcms:8.3:*:*:*:*:*:*:*
Original advisory text
An issue was discovered on zzcms 8.3. There is a vulnerability at /user/del.php that can delete any file by placing its relative path into the zzcms_main table and then making an img add request. T...
An issue was discovered on zzcms 8.3. There is a vulnerability at /user/del.php that can delete any file by placing its relative path into the zzcms_main table and then making an img add request. This can be leveraged for database access by deleting install.lock.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.5 High
Exploitation
1% chance of attack within 30 days
Type
CWE-20Improper Input Validation
Timeline
Published2 Jul 2018
Updated4 Nov 2026
First seen29 Sep 2026
Sources
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