CVE-2021-4244: unspecified yikes-inc-easy-mailchimp-extender plugin Improper Neutralization
Vulnerability summary
CVE-2021-4244 is a medium (CVSS 6.1) Improper Neutralization vulnerability in unspecified yikes-inc-easy-mailchimp-extender plugin. EPSS estimates a 0.59% chance of exploitation in the next 30 days, higher than 47.2% of scored vulnerabilities.
Timeline
- 12-12-2022PublishedVulnerability first disclosed.
- 15-04-2025Last modifiedVulnerability information updated.
Description
A vulnerability classified as problematic has been found in yikes-inc-easy-mailchimp-extender Plugin up to 6.8.5. This affects an unknown part of the file admin/partials/ajax/add_field_to_form.php. The manipulation of the argument field_name/merge_tag/field_type/list_id leads to cross site scripting. It is possible to initiate the attack remotely. Upgrading to version 6.8.6 is able to address this issue. The name of the patch is 3662c6593aa1bb4286781214891d26de2e947695. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-215307.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA2.6LowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.59%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
+0.05 pp
From 0.55% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-707Improper NeutralizationThe product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component.
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Affected systems
Unspecified1 product
- yikes-inc-easy-mailchimp-extender plugin6.8.0 | 6.8.1 | 6.8.2 | 6.8.3 | 6.8.4 | 6.8.5
Yikesplugins1 product
- easy_forms_for_mailchimp< 6.8.6
2 vendors · 2 products
References
4 links- github.com/EvanHerman/yikes-inc-easy-mailchimp-extender/releases/tag/6.8.6Release NotesThird Party Advisory
- vuldb.com?id.215307Third Party Advisory