CVE-2024-8480

Image Optimizer, Resizer and CDN – Sirv <= 7.2.7 - Missing Authorization to Authenticated (Contributor+) Arbitrary File Upload

HIGH
8.8
CVSS Score
Published: September 6, 2024 at 03:30 AM UTC
Updated: June 17, 2026 at 08:22 AM UTC
2 products affected across 1 vendorSirvImage Optimizer , Resizer and Cdn

Using Image Optimizer, Resizer and CDN – Sirv by sirv?

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Severity
HIGH8.8
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Sirv· Sirvwordpress-plugin
95%
v ≤ 7.2.7v < 7.2.8
Affected range stops below 7.2.8, so it looks safe — our inference, not a vendor statement
v ≤ 7.2.7

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHWordfence
Vector?

Quick Info

StatusANALYZED
CWE
CWE-862

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