How severe is CVE-2021-24374?

CVE-2021-24374 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-2021-24374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24374?

CVE-2021-24374 affects Automattic Jetpack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24374?

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

When was CVE-2021-24374 published?

CVE-2021-24374 was published on 2021-06-21 and last updated on 2026-06-17.

CVE-2021-24374

CVE-2021-24374 is a medium-severity vulnerability in Automattic Jetpack 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-639.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Automattic Jetpack
Published: 2021-06-21
Last modified: 2026-06-17

Description

The Jetpack Carousel module of the JetPack WordPress plugin before 9.8 allows users to create a "carousel" type image gallery and allows users to comment on the images. A security vulnerability was found within the Jetpack Carousel module by nguyenhg_vcs that allowed the comments of non-published page/posts to be leaked.

Frequently asked questions

What is CVE-2021-24374?: The Jetpack Carousel module of the JetPack WordPress plugin before 9.8 allows users to create a "carousel" type image gallery and allows users to comment on the images. A security vulnerability was found within the Jetpack Carousel module by nguyenhg_vcs that allowed the comments of non-published page/posts to be leaked.
How severe is CVE-2021-24374?: CVE-2021-24374 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-2021-24374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24374?: CVE-2021-24374 affects Automattic Jetpack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24374 published?: CVE-2021-24374 was published on 2021-06-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:automattic:jetpack:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Automattic Jetpack

CVE-2023-2996 — High (CVSS 8.8): The Jetpack WordPress plugin before 12.1.1 does not validate uploaded files, allowing users with author roles or above…
CVE-2011-4673 — High (CVSS 7.5): SQL injection vulnerability in modules/sharedaddy.php in the Jetpack plugin for WordPress allows remote attackers to…
CVE-2023-45050 — Medium (CVSS 6.5): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Automattic…
CVE-2024-4392 — Medium (CVSS 6.4): The Jetpack – WP Security, Backup, Speed, & Growth plugin for WordPress is vulnerable to Stored Cross-Site Scripting…
CVE-2023-54332 — Medium (CVSS 6.1): Jetpack 11.4 contains a cross-site scripting vulnerability in the contact form module that allows attackers to inject…
CVE-2024-10858 — Medium (CVSS 6.1): The Jetpack WordPress plugin before 14.1 does not properly checks the postmessage origin in its 13.x versions,…

All CVEs affecting Automattic Jetpack →

Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities

CVE-2025-40805 — Critical (CVSS 10.0): Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an…
CVE-2024-45032 — Critical (CVSS 10.0): A vulnerability has been identified in Industrial Edge Management Pro (All versions < V1.9.5), Industrial Edge…
CVE-2026-34037 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
CVE-2026-52782 — Critical (CVSS 9.9): OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through…
CVE-2026-45552 — Critical (CVSS 9.9): Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior,…
CVE-2026-29200 — Critical (CVSS 9.9): A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and…

Browse all CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities →