How severe is CVE-2015-9439?

CVE-2015-9439 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2015-9439 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-9439?

CVE-2015-9439 affects Addthis. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-9439?

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

When was CVE-2015-9439 published?

CVE-2015-9439 was published on 2019-09-26 and last updated on 2026-06-17.

CVE-2015-9439

CVE-2015-9439 is a medium-severity vulnerability in Addthis with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Addthis
Published: 2019-09-26
Last modified: 2026-06-17

Description

The addthis plugin before 5.0.13 for WordPress has CSRF with resultant XSS via the wp-admin/options-general.php?page=addthis_social_widget pubid parameter.

Frequently asked questions

What is CVE-2015-9439?: The addthis plugin before 5.0.13 for WordPress has CSRF with resultant XSS via the wp-admin/options-general.php?page=addthis_social_widget pubid parameter.
How severe is CVE-2015-9439?: CVE-2015-9439 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2015-9439 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-9439?: CVE-2015-9439 affects Addthis. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-9439?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-9439 published?: CVE-2015-9439 was published on 2019-09-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:addthis:addthis:*:*:*:*:*:wordpress:*:*

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