8.1

CVE-2025-1028: Contact Manager <= 8.6.4 - Unauthenticated Arbitrary Double File Extension Upload

Deferred
Published 05-02-2025Last modified 08-04-2026

Vulnerability summary

CVE-2025-1028 is a high (CVSS 8.1) vulnerability in kleor contact manager. EPSS estimates a 0.76% chance of exploitation in the next 30 days, higher than 55.1% of scored vulnerabilities. Fixed in 8.6.5.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.76%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 05-02-2025
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

Description

The Contact Manager plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the contact form upload feature in all versions up to, and including, 8.6.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible in specific configurations where the first extension is processed over the final. This vulnerability also requires successfully exploiting a race condition in order to exploit.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.76%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.76% on 27-09-2026

27-09-202627-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Kleor1 product
Wordpress1 product
  • contact-manager≤ 8.6.4 (fixed in 8.6.5)

2 vendors · 2 products

References

3 links