How severe is CVE-2021-24859?

CVE-2021-24859 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-24859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24859?

CVE-2021-24859 affects User Meta Shortcodes Project User Meta Shortcodes. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24859?

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

When was CVE-2021-24859 published?

CVE-2021-24859 was published on 2021-12-13 and last updated on 2026-06-17.

CVE-2021-24859

CVE-2021-24859 is a medium-severity vulnerability in User Meta Shortcodes Project User Meta Shortcodes 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: User Meta Shortcodes Project User Meta Shortcodes
Published: 2021-12-13
Last modified: 2026-06-17

Description

The User Meta Shortcodes WordPress plugin through 0.5 registers a shortcode that allows any user with a role as low as contributor to access other users metadata by specifying the user login as a parameter. This makes the WP instance vulnerable to data extrafiltration, including password hashes

Frequently asked questions

What is CVE-2021-24859?: The User Meta Shortcodes WordPress plugin through 0.5 registers a shortcode that allows any user with a role as low as contributor to access other users metadata by specifying the user login as a parameter. This makes the WP instance vulnerable to data extrafiltration, including password hashes
How severe is CVE-2021-24859?: CVE-2021-24859 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-24859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24859?: CVE-2021-24859 affects User Meta Shortcodes Project User Meta Shortcodes. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24859?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24859 published?: CVE-2021-24859 was published on 2021-12-13 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/958f44a5-07e7-4349-9212-2a039a082ba0

Affected products (1)

cpe:2.3:a:user_meta_shortcodes_project:user_meta_shortcodes:*:*:*:*:*:wordpress:*:*

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