CVE-2024-8378Public exploitNetwork attack vector

Stored cross-site scripting via unsanitized sideloaded SVGs

Published Nov 7, 2024 · Updated Nov 7, 2024

Cross-site scripting in 10up Safe SVG before 2.2.6 allows remote authenticated users to store malicious SVGs through raw media uploads. The plugin registers its SVG sanitizer only on wp_handle_upload, leaving wp_handle_sideload requests from the REST media endpoint to save script-bearing SVG content unchanged. Author-level access is required, and a victim who opens the uploaded file can execute attacker-controlled script in the site's origin.

CVSS severity4.8
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in 10up Safe SVG before 2.2.6 allows remote authenticated users to store malicious SVGs through raw media uploads. The plugin registers its SVG sanitizer only on wp_handle_upload, leaving wp_handle_sideload requests from the REST media endpoint to save script-bearing SVG content unchanged. Author-level access is required, and a victim who opens the uploaded file can execute attacker-controlled script in the site's origin.

The record

CVE
CVE-2024-8378
Published
Nov 7, 2024
Updated
Nov 7, 2024
Vendor
10up
Product
Safe SVG
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

10up · Safe SVGversion=0 <2.2.6

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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