CVE-2026-27013Public exploitNetwork attack vector

Stored XSS via unescaped SVG attributes

Published Feb 19, 2026 · Updated Feb 19, 2026

Cross-site scripting in Fabric.js before 7.2.0 allows remote attackers to execute JavaScript via crafted JSON exported as SVG. Deserialization assigns arbitrary object properties verbatim, and SVG exporters interpolate identifiers and source values into XML attributes without escaping. Exploitation requires an application to accept attacker-controlled JSON, call toSVG(), and render the resulting SVG in a victim's browser.

CVSS severity7.6
High
EPSS probability0.28%
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 Fabric.js before 7.2.0 allows remote attackers to execute JavaScript via crafted JSON exported as SVG. Deserialization assigns arbitrary object properties verbatim, and SVG exporters interpolate identifiers and source values into XML attributes without escaping. Exploitation requires an application to accept attacker-controlled JSON, call toSVG(), and render the resulting SVG in a victim's browser.

The record

CVE
CVE-2026-27013
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
Fabric.js
Product
Fabric.js
Classifications
CWE-116, CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2026Record 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=< 7.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fabric.js · Fabric.jsversion=< 7.2.0

Published CVSS scores

6.1NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L

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-116Improper Encoding or Escaping of Output
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/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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