How severe is CVE-2024-5853?

CVE-2024-5853 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-5853 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-2024-5853?

CVE-2024-5853 affects Sirv. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-5853?

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

Does CVE-2024-5853 have an EU (EUVD) identifier?

Yes. CVE-2024-5853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-46997.

When was CVE-2024-5853 published?

CVE-2024-5853 was published on 2024-06-19 and last updated on 2026-06-17.

CVE-2024-5853

CVE-2024-5853 is a critical-severity vulnerability in Sirv with a CVSS 3.x base score of 9.9. 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: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-46997
Weakness: CWE-434
Affected product: Sirv
Published: 2024-06-19
Last modified: 2026-06-17

Description

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the sirv_upload_file_by_chanks AJAX action in all versions up to, and including, 7.2.6. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Frequently asked questions

What is CVE-2024-5853?: The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the sirv_upload_file_by_chanks AJAX action in all versions up to, and including, 7.2.6. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
How severe is CVE-2024-5853?: CVE-2024-5853 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-5853 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-2024-5853?: CVE-2024-5853 affects Sirv. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-5853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-5853 have an EU (EUVD) identifier?: Yes. CVE-2024-5853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-46997.
When was CVE-2024-5853 published?: CVE-2024-5853 was published on 2024-06-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sirv:sirv:*:*:*:*:*:wordpress:*:*

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