How severe is CVE-2024-8480?

CVE-2024-8480 has a CVSS 3.x base score of 8.8, rated high 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-2024-8480 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-8480?

CVE-2024-8480 affects Sirv. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-8480?

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.

Does CVE-2024-8480 have an EU (EUVD) identifier?

Yes. CVE-2024-8480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49211.

When was CVE-2024-8480 published?

CVE-2024-8480 was published on 2024-09-06 and last updated on 2026-06-17.

CVE-2024-8480

CVE-2024-8480 is a high-severity vulnerability in Sirv with a CVSS 3.x base score of 8.8. 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-862.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-49211
Weakness: CWE-862
Affected product: Sirv
Published: 2024-09-06
Last modified: 2026-06-17

Description

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'sirv_save_prevented_sizes' function in all versions up to, and including, 7.2.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to exploit the 'sirv_upload_file_by_chunks_callback' function, which lacks proper file type validation, allowing attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Frequently asked questions

What is CVE-2024-8480?: The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'sirv_save_prevented_sizes' function in all versions up to, and including, 7.2.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to exploit the 'sirv_upload_file_by_chunks_callback' function, which lacks proper file type validation, allowing attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
How severe is CVE-2024-8480?: CVE-2024-8480 has a CVSS 3.x base score of 8.8, rated high 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-2024-8480 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-8480?: CVE-2024-8480 affects Sirv. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-8480?: 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.
Does CVE-2024-8480 have an EU (EUVD) identifier?: Yes. CVE-2024-8480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49211.
When was CVE-2024-8480 published?: CVE-2024-8480 was published on 2024-09-06 and last updated on 2026-06-17.

References

Affected products (1)

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

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