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CVE-2021-36839

WordPress Social Media Follow Buttons Bar plugin <= 4.73 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability

4.8 Medium

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Social Media Follow Buttons Bar plugin <= 4.73 at WordPress.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.51%Down 0.4 points since Oct 1, 2022
90%50%10%1%

What each source reports

CVE List Score used 4.8

WordPress Social Media Follow Buttons Bar plugin <= 4.73 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Social Media Follow Buttons Bar plugin <= 4.73 at WordPress.

Record
CVE-2021-36839
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2021-23415 4.8

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Social Media Follow Buttons Bar plugin <= 4.73 at WordPress.

Record
EUVD-2021-23415
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-pjp7-ffv7-qj9m 4.8

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Social Media Follow...

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Social Media Follow Buttons Bar plugin <= 4.73 at WordPress.

Record
GHSA-pjp7-ffv7-qj9m
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 4.8

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Social Media Follow Buttons Bar plugin <= 4.73 at WordPress.

Record
CVE-2021-36839
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-36839 is a medium vulnerability (CVSS 4.8) in Spacexchimp Social Media Follow Buttons Bar, published September 30, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. No source names a fixed version.

References

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