CVE-2026-6593Public exploitNetwork attack vector

Stored XSS via inline SVG serving

Published Apr 20, 2026 · Updated Apr 20, 2026

Stored cross-site scripting in ComfyUI 0.13.0 and earlier allows remote authenticated users to run script through the View endpoint. The image upload route accepts SVG files, while /view omits image/svg+xml from its dangerous-type blocklist and serves the file inline, so browsers execute embedded script. Exploitation requires access to an exposed ComfyUI server and a victim to open the stored SVG URL; the script can read browser-stored workflow data and invoke same-origin APIs.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in ComfyUI 0.13.0 and earlier allows remote authenticated users to run script through the View endpoint. The image upload route accepts SVG files, while /view omits image/svg+xml from its dangerous-type blocklist and serves the file inline, so browsers execute embedded script. Exploitation requires access to an exposed ComfyUI server and a victim to open the stored SVG URL; the script can read browser-stored workflow data and invoke same-origin APIs.

The record

CVE
CVE-2026-6593
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
Comfy Org
Product
ComfyUI
Classifications
CWE-94, CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 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=0.1
  2. Affected versionversion=0.10
  3. Affected versionversion=0.11
  4. Affected versionversion=0.12
  5. Affected versionversion=0.13.0
  6. Affected versionversion=0.2
  7. Affected versionversion=0.3
  8. Affected versionversion=0.4
  9. Affected versionversion=0.5
  10. Affected versionversion=0.6
  11. Affected versionversion=0.7
  12. Affected versionversion=0.8
  13. Affected versionversion=0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Comfy Org · ComfyUIversion=0.1; version=0.10; version=0.11; version=0.12; version=0.13.0; version=0.2; version=0.3; version=0.4; version=0.5; version=0.6; version=0.7; version=0.8; version=0.9

Published CVSS scores

2.0VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

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-94Code Injection
CWE-79Cross Site Scripting

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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