How severe is CVE-2021-24123?

CVE-2021-24123 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24123 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24123?

CVE-2021-24123 affects Blubrry Powerpress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24123?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-24123 published?

CVE-2021-24123 was published on 2021-03-18 and last updated on 2026-06-17.

CVE-2021-24123

CVE-2021-24123 is a high-severity vulnerability in Blubrry Powerpress with a CVSS 3.x base score of 7.2. 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-434.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Blubrry Powerpress
Published: 2021-03-18
Last modified: 2026-06-17

Description

Arbitrary file upload in the PowerPress WordPress plugin, versions before 8.3.8, did not verify some of the uploaded feed images (such as the ones from Podcast Artwork section), allowing high privilege accounts (admin+) being able to upload arbitrary files, such as php, leading to RCE.

Frequently asked questions

What is CVE-2021-24123?: Arbitrary file upload in the PowerPress WordPress plugin, versions before 8.3.8, did not verify some of the uploaded feed images (such as the ones from Podcast Artwork section), allowing high privilege accounts (admin+) being able to upload arbitrary files, such as php, leading to RCE.
How severe is CVE-2021-24123?: CVE-2021-24123 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24123 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24123?: CVE-2021-24123 affects Blubrry Powerpress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24123?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-24123 published?: CVE-2021-24123 was published on 2021-03-18 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/43aa30bf-eaf8-467a-93a1-78f9bdb37b36

Affected products (1)

cpe:2.3:a:blubrry:powerpress:*:*:*:*:*:wordpress:*:*

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