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CVE-2024-13883

14
FAUCET Score

CVE-2024-13883 is a Cross-Site Request Forgery (CSRF) vulnerability affecting all versions up to and including 3.51 of the WPUpper Share Buttons plugin for WordPress. This flaw stems from inadequate nonce validation in the 'save_custom_css_request' function, allowing unauthenticated attackers to inject custom CSS to modify a site. The vulnerability has a CVSS score of 4.3 (Medium), indicating a low attack complexity requiring user interaction, with potential for low impact on integrity and no impact on confidentiality or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.51CPE matchmatch criteria
cpe:2.3:a:victorfreitas:wpupper_share_buttons:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
12.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 12th percentile among its peer group of 26,221 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/wpupper-share-buttons/trunk/Controller/ajax.controller.php
Product
plugins.trac.wordpress.org / changeset/3262537
wordfence.com / threat-intel/vulnerabilities/id/5ca55c87-6548-43b8-a23f-d31a51df9533
Third Party Advisory