How severe is CVE-2021-36890?

CVE-2021-36890 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-36890 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36890?

CVE-2021-36890 affects Supsystic Social Share Buttons. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36890?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-36890 published?

CVE-2021-36890 was published on 2022-06-02 and last updated on 2026-06-17.

CVE-2021-36890

CVE-2021-36890 is a medium-severity vulnerability in Supsystic Social Share Buttons with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Supsystic Social Share Buttons
Published: 2022-06-02
Last modified: 2026-06-17

Description

Cross-Site Request Forgery (CSRF) vulnerability in Social Share Buttons by Supsystic plugin <= 2.2.2 at WordPress.

Frequently asked questions

What is CVE-2021-36890?: Cross-Site Request Forgery (CSRF) vulnerability in Social Share Buttons by Supsystic plugin <= 2.2.2 at WordPress.
How severe is CVE-2021-36890?: CVE-2021-36890 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-36890 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36890?: CVE-2021-36890 affects Supsystic Social Share Buttons. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36890?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36890 published?: CVE-2021-36890 was published on 2022-06-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:supsystic:social_share_buttons:*:*:*:*:*:wordpress:*:*

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