How severe is CVE-2021-42749?

CVE-2021-42749 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 low, integrity none, and availability none.

Is CVE-2021-42749 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42749?

CVE-2021-42749 affects Fastlinemedia Beaver Themer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42749?

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

When was CVE-2021-42749 published?

CVE-2021-42749 was published on 2022-01-10 and last updated on 2026-06-17.

CVE-2021-42749

CVE-2021-42749 is a medium-severity vulnerability in Fastlinemedia Beaver Themer 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-668.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Fastlinemedia Beaver Themer
Published: 2022-01-10
Last modified: 2026-06-17

Description

In Beaver Themer, attackers can bypass conditional logic controls (for hiding content) when viewing the post archives. Exploitation requires that a Themer layout is applied to the archives, and that the post excerpt field is not set.

Frequently asked questions

What is CVE-2021-42749?: In Beaver Themer, attackers can bypass conditional logic controls (for hiding content) when viewing the post archives. Exploitation requires that a Themer layout is applied to the archives, and that the post excerpt field is not set.
How severe is CVE-2021-42749?: CVE-2021-42749 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 low, integrity none, and availability none.
Is CVE-2021-42749 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42749?: CVE-2021-42749 affects Fastlinemedia Beaver Themer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42749?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42749 published?: CVE-2021-42749 was published on 2022-01-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fastlinemedia:beaver_themer:-:*:*:*:*:*:*:*

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