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CVE-2025-8889VulnerabilityPublished Updated

CVE-2025-8889: Compress & Upload (WordPress plugin) · Unrestricted File Upload

Affects Compress & Upload (WordPress plugin)Source CVE Database V5

0

Not known to be exploited · CVSS 3.8 Low.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
3.8Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
Compress & UploadAffected
  • =0
Fixed in–

AI-suggested

1. Upgrade the Compress & Upload plugin to version 1.0.5 or later as soon as possible to ensure the vulnerability is patched. 2. Restrict admin privileges strictly and audit admin accounts regularly to prevent unauthorized access. 3. Implement file upload monitoring and logging to detect unusual or unauthorized file uploads. 4. Use web application firewalls (WAFs) configured to detect and block suspicious file upload patterns. 5. In multisite WordPress environments, review and tighten upload permissions and validate user roles carefully. 6. Conduct regular security assessments and penetration tests focusing on file upload functionalities. 7. Employ endpoint protection and malware scanning on the server to detect malicious files uploaded via this vulnerability. 8. Educate administrators about the risks of uploading untrusted files and enforce policies limiting file types allowed for upload.

Description

The Compress & Upload WordPress plugin before 1.0.5 does not properly validate uploaded files, allowing high privilege users such as admin to upload arbitrary files on the server even when they should not be allowed to (for example in multisite setup)

References

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