CVE-2026-73650Public exploitNetwork attack vector

Cross-site scripting via incomplete script removal

Published Aug 13, 2026 · Updated Aug 13, 2026

Cross-site scripting in affected SVGO releases allows remote attackers to execute scripts through crafted SVG input opened by another user. The removeScripts plugin fails to recognize namespaced script elements, and versions 3 and 4 compare JavaScript URI schemes case sensitively, leaving executable markup in optimized output. Exploitation requires this disabled-by-default plugin, untrusted SVG processing, same-origin serving, and another user opening the result; scripts can read local storage or cookies.

CVSS severity8.2
High
EPSS probability0.24%
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 affected SVGO releases allows remote attackers to execute scripts through crafted SVG input opened by another user. The removeScripts plugin fails to recognize namespaced script elements, and versions 3 and 4 compare JavaScript URI schemes case sensitively, leaving executable markup in optimized output. Exploitation requires this disabled-by-default plugin, untrusted SVG processing, same-origin serving, and another user opening the result; scripts can read local storage or cookies.

The record

CVE
CVE-2026-73650
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
SVGO
Product
SVGO
Classifications
CWE-79, CWE-184, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 1.0.0, < 2.8.3
  2. Affected versionversion=>= 3.0.0, < 3.3.4
  3. Affected versionversion=>= 4.0.0, < 4.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SVGO · SVGOversion=>= 1.0.0, < 2.8.3; version=>= 3.0.0, < 3.3.4; version=>= 4.0.0, < 4.0.2

Published CVSS scores

8.2GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-184Incomplete List of Disallowed Inputs
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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