Cross-Site Scripting (XSS) in defuddle (CVE-2026-61824)
Summary
Cross-site scripting in defuddle (CVE-2026-61824). Confidential information can be exposed externally. Mitigation: upgrade to 0.19.1 or later.
Original description
The description as published by the source.
Summary
An Improper Neutralization of Input During Web Page Generation issue in the site extractor component allows an attacker-controlled attribute value to be injected into output HTML without escaping. An attacker who crafts a malicious HTML page or controls content on a matching domain can execute arbitrary scripts when a victim processes the page, resulting in Cross-Site Scripting (XSS). This affects defuddle through 0.19.0 and has been patched in version 0.19.1.
Impact
This vulnerability allows for Cross-Site Scripting (XSS) execution without needing to compromise external websites. Affected consumers include:
- Obsidian Web Clipper,
- web services serving the parsed output directly as HTML, and
- any downstream application rendering the unsanitized HTML results
Patch
This issue has been patched in defuddle version 0.19.1. Users are encouraged to update to the latest release.
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-2026-61824 has been found in defuddle.
Confidential information can be exposed externally. CVSS score: 8.2/10.
What to do: upgrade defuddle to 0.19.1 or later.
If unsure, ask your IT team or search "defuddle CVE-2026-61824" on the vendor's site.
CVE-2026-61824 (defuddle) — CWE-79 / CVSS v3 8.2
Attack vector: remote (network-reachable) / unauthenticated
Patched: 0.19.1 — 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.
Cross-site scripting (XSS) (CWE-79) exists in defuddle.
Check the vendor advisory for the affected versions of defuddle.
Severity: High (CVSS 8.2/10). Confidential information can be exposed externally.
Update to 0.19.1.
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 'defuddle' . 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
-
1Identify exposure identify
grep -r 'defuddle' . | 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
defuddle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 defuddle to 0.19.1ステージング環境で 0.19.1 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。