Vulnerability in fabric (CVE-2026-44311)
Summary
Vulnerability in fabric (CVE-2026-44311). Risk of unauthorized operations or information disclosure. Exploitable via color. Mitigation: upgrade to 7.4.0 or later.
Original description
The description as published by the source.
Fabric.js is a Javascript HTML5 canvas library. Prior to 7.4.0, a potential Cross-Site Scripting (XSS) vulnerability exists in Fabric.js due to improper escaping of user-controlled input during SVG serialization via the toSVG() method. Specifically, the color field within the colorStops array of a fabric.Gradient object is not properly escaped when converted into SVG elements. If an application renders the generated SVG string into the DOM, this may allow an attacker to inject arbitrary HTML/SVG and execute JavaScript in the victim's browser. This vulnerability is fixed in 7.4.0.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-44311 has been found in fabric.
Attackers can target a specific entry point like color over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 5.4/10.
What to do: upgrade fabric to 7.4.0 or later.
If unsure, ask your IT team or search "fabric CVE-2026-44311" on the vendor's site.
CVE-2026-44311 (fabric) — CWE-116 / CVSS v3 5.4
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: color / colorStops / fabric.Gradient / innerHTML
Patched: 7.4.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-116) exists in fabric. Attackers reach the vulnerable code path via color without authentication.
Check the vendor advisory for the affected versions of fabric. Attack surface: color / colorStops / fabric.Gradient / innerHTML.
Severity: Medium (CVSS 5.4/10). Risk of unauthorized operations or information disclosure.
Update to 7.4.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'fabric' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'fabric' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
fabricを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade fabric to 7.4.0ステージング環境で 7.4.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- web github.com
- web github.com