How severe is CVE-2019-20203?

CVE-2019-20203 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2019-20203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20203?

CVE-2019-20203 affects Postieplugin Postie. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20203?

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

When was CVE-2019-20203 published?

CVE-2019-20203 was published on 2020-01-02 and last updated on 2026-06-17.

CVE-2019-20203

CVE-2019-20203 is a medium-severity vulnerability in Postieplugin Postie with a CVSS 3.x base score of 5.3. 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-290.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-290
Affected product: Postieplugin Postie
Published: 2020-01-02
Last modified: 2026-06-17

Description

The Authorized Addresses feature in the Postie plugin 1.9.40 for WordPress allows remote attackers to publish posts by spoofing the From information of an email message.

Frequently asked questions

What is CVE-2019-20203?: The Authorized Addresses feature in the Postie plugin 1.9.40 for WordPress allows remote attackers to publish posts by spoofing the From information of an email message.
How severe is CVE-2019-20203?: CVE-2019-20203 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2019-20203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20203?: CVE-2019-20203 affects Postieplugin Postie. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20203?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20203 published?: CVE-2019-20203 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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