How severe is CVE-2019-20204?

CVE-2019-20204 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-20204 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20204?

CVE-2019-20204 affects Postieplugin Postie. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20204?

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

When was CVE-2019-20204 published?

CVE-2019-20204 was published on 2020-01-02 and last updated on 2026-06-17.

CVE-2019-20204

CVE-2019-20204 is a medium-severity vulnerability in Postieplugin Postie with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Postieplugin Postie
Published: 2020-01-02
Last modified: 2026-06-17

Description

The Postie plugin 1.9.40 for WordPress allows XSS, as demonstrated by a certain payload with jaVasCript:/* at the beginning and a crafted SVG element.

Frequently asked questions

What is CVE-2019-20204?: The Postie plugin 1.9.40 for WordPress allows XSS, as demonstrated by a certain payload with jaVasCript:/* at the beginning and a crafted SVG element.
How severe is CVE-2019-20204?: CVE-2019-20204 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-20204 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20204?: CVE-2019-20204 affects Postieplugin Postie. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20204?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20204 published?: CVE-2019-20204 was published on 2020-01-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:postieplugin:postie:*:*:*:*:*:wordpress:*:*

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