9.8

CVE-2021-4362: wordpress kiwi-social-share Missing Authorization

CVSS: 9.8v3.1CriticalModified
Published 07-06-2023Last modified 28-12-2024
Open JSON

Vulnerability summary

CVE-2021-4362 is a critical (CVSS 9.8) Missing Authorization vulnerability in wordpress kiwi-social-share. EPSS estimates a 1.42% chance of exploitation in the next 30 days, higher than 72.5% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 2.1.3.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
1.42%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 07-06-2023
    PublishedVulnerability first disclosed.
  2. 28-12-2024
    Last modifiedVulnerability information updated.

Description

The Kiwi Social Share plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the kiwi_social_share_get_option() function called via the kiwi_social_share_get_option AJAX action in version 2.1.0. This makes it possible for unauthenticated attackers to read and modify arbitrary options on a WordPress site that can be used for complete site takeover. This was a previously fixed vulnerability that was reintroduced in this version.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.42%

Chance of exploitation in the next 30 days

Percentile

73%

Versus all other CVEs

30-day change

0.00 pp

From 1.42% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (blog.nintechnet.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Wpkube2 products
Wordpress1 product
  • kiwi-social-share≥ 2.1.0, ≤ 2.1.2 (fixed in 2.1.3)

2 vendors · 3 products

References

4 links