5.4

CVE-2026-18335: themeum kirki – freeform page builder, website builder & customizer Server-Side Request Forgery (SSRF)

CVSS: 5.4v3.1MediumDeferred
Published 24-09-2026Last modified 24-09-2026
Open JSON

Vulnerability summary

CVE-2026-18335 is a medium (CVSS 5.4) Server-Side Request Forgery (SSRF) vulnerability in themeum kirki – freeform page builder, website builder & customizer. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.1% of scored vulnerabilities. Fixed in 6.2.1.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 24-09-2026
    PublishedVulnerability first disclosed.
  2. 24-09-2026
    Last modifiedVulnerability information updated.

Description

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Blind Server-Side Request Forgery in all versions up to, and including, 6.2.0 via the 'kirki_data' Parameter. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

24-09-202619-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Themeum1 product
Wordpress1 product
  • kirki≤ 6.2.0 (fixed in 6.2.1)

2 vendors · 2 products

References

3 links