What is CVE-2024-2721?

CVE-2024-2721 is a high-severity vulnerability in Social Media Share Buttons By Sygnoos, classified under Deserialization of Untrusted Data. CVSS score: 8.2/10. Published 2024-03-20.

How severe is CVE-2024-2721?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2024-2721 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Social Media Share Buttons By Sygnoos

CVE-2024-2721

Deserialization of Untrusted Data vulnerability in Social Media Share Buttons By Sygnoos Social Media Share Buttons.This issue affects Social Media Share Buttons: from n/a through 2.1.0.

Vulnerability class: Insecure Deserialization

Published 2024-03-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

NaInSec/CVE-LIST

References

patchstack.com/database/vulnerability/social-media-builder/wordpress-social-med… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2024-2721?: CVE-2024-2721 is a high-severity vulnerability in Social Media Share Buttons By Sygnoos, classified under Deserialization of Untrusted Data. CVSS score: 8.2/10. Published 2024-03-20.
How severe is CVE-2024-2721?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2024-2721 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.