Cross-Site Scripting (XSS) in @appium/base-driver (CVE-2026-58191)
Summary
Cross-site scripting in @appium/base-driver (CVE-2026-58191). Data can be tampered with by attackers. Exploitable via GET /test/guinea-pig. Mitigation: upgrade to 10.7.0 or later.
Original description
The description as published by the source.
Summary
Appium's base-driver mounts the built-in /test/guinea-pig, /test/guinea-pig-scrollable and /test/guinea-pig-app-banner routes unconditionally on every server. The handler reflects the throwError query param, the comments POST field, and the User-Agent request header into the returned HTML via compileLodashTemplate, which interpolates <%= expr %> as String(expr) with no HTML/JS escaping. This yields reflected XSS, and the throwError value is reflected inside a `` block, giving arbitrary JavaScript execution on the server's origin. No authentication, no session, no driver and no plugin are required, and the default bind address is 0.0.0.0.
Details
Affected
@appium/base-driver10.6.0 (with Appium server 3.5.0); tested live.- Template engine helper:
@appium/base-driverlib/utils.tscompileLodashTemplate.
Location (file:line)
- Routes mounted unconditionally:
base-driver/lib/express/server.ts:216-219
(app.all('/test/guinea-pig', guineaPig)etc.). - Tainting:
base-driver/lib/express/static.ts:35-61(guineaPigTemplate) —
throwError = String(req.params.throwError ?? req.query?.throwError),params.comment = String(req.body.comments),params.userAgent = req.headers['user-agent']. - Unescaped render:
base-driver/lib/utils.ts:67-83(compileLodashTemplate)
emits<%= expr %>asString(${expr})vianew Function(...), no escaping. - Sinks (shipped templates): `base-driver/static/test/guinea…
Source: NIST National Vulnerability Database 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-2026-58191 has been found in @appium/base-driver.
Attackers can target a specific entry point like GET /test/guinea-pig over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 6.5/10.
What to do: upgrade @appium/base-driver to 10.7.0 or later.
If unsure, ask your IT team or search "@appium/base-driver CVE-2026-58191" on the vendor's site.
CVE-2026-58191 (@appium/base-driver) — CWE-79 / CVSS v3 6.5
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: GET /test/guinea-pig / POST /test/guinea-pig / GET /test/guinea-pig / throwError
Patched: 10.7.0 — 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.
Cross-site scripting (XSS) (CWE-79) exists in @appium/base-driver. Attackers reach the vulnerable code path via GET /test/guinea-pig without authentication.
Check the vendor advisory for the affected versions of @appium/base-driver. Attack surface: GET /test/guinea-pig / POST /test/guinea-pig / GET /test/guinea-pig / throwError.
Severity: Medium (CVSS 6.5/10). Data can be tampered with by attackers.
Update to 10.7.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual GET /test/guinea-pig requests with malformed payloads or SQL meta-characters. Run grep -r '@appium/base-driver' . 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 '@appium/base-driver' . | 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
@appium/base-driverを grep し、稼働しているサービス・バージョンを把握する。 -
2Hunt for indicators of compromise detect
grep 'GET /test/guinea-pig' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
GET /test/guinea-pigへの異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Apply patch patch
Upgrade @appium/base-driver to 10.7.0ステージング環境で 10.7.0 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と、Step 2 で見つけた異常検知の続報チェックを含めること。
-
4Post-deployment verification verify
Replay attack against GET /test/guinea-pig on staging to confirm patch closes the vector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 Step 2 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com
- web github.com
- web github.com