Vulnerability in pyload-ng (CVE-2026-75597)
Summary
Vulnerability in pyload-ng (CVE-2026-75597). Risk of unauthorized operations or information disclosure. Exploitable via exc.desc. Mitigation: upgrade to 0.5.0b3.dev101 or later.
Original description
The description as published by the source.
Summary
The /web/ route in src/pyload/webui/app/blueprints/app_blueprint.py renders Jinja2 templates without any authentication requirement. Every equivalent direct route (/logs, /settings, /queue, /dashboard, etc.) is protected by @login_required, but the underlying templates for all of these pages are accessible unauthenticated via this endpoint. Combined with an exception attribute typo in src/pyload/webui/app/handlers.py (exc.desc instead of exc.description), internal Jinja2 variable names are leaked in HTTP 500 response bodies to unauthenticated callers. An attacker can also enumerate all valid template names by observing 200 vs 500 response differentiation.
Details
Bug 1 — Missing authentication on /web/
File: src/pyload/webui/app/blueprints/app_blueprint.py, lines 32–36
@bp.route("/web/", endpoint="web")
def render(filename): # ← no @login_required
mimetype = mimetypes.guess_type(filename)[0] or "text/html"
data = render_template(filename)
return flask.Response(data, mimetype=mimetype)
Every other sensitive route in the same file is protected:
@bp.route("/logs", ...)
@login_required("LIST") # protected
@bp.route("/settings", ...)
@login_required("SETTINGS") # protected
@bp.route("/files", ...)
@login_required("DOWNLOAD") # protected
The /web/ route has no such decorator, allowing any unauthenticated HTTP client to render arbitrary templates by supply…
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-2026-75597 has been found in pyload-ng.
Attackers can target a specific entry point like exc.desc over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 5.3/10.
What to do: upgrade pyload-ng to 0.5.0b3.dev101 or later.
If unsure, ask your IT team or search "pyload-ng CVE-2026-75597" on the vendor's site.
CVE-2026-75597 (pyload-ng) — CWE-209 / CVSS v3 5.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: exc.desc / exc.description / AttributeError / desc
Patched: 0.5.0b3.dev101 — 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-209) exists in pyload-ng. Attackers reach the vulnerable code path via exc.desc without authentication.
Check the vendor advisory for the affected versions of pyload-ng. Attack surface: exc.desc / exc.description / AttributeError / desc.
Severity: Medium (CVSS 5.3/10). Risk of unauthorized operations or information disclosure.
Update to 0.5.0b3.dev101.
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 'pyload-ng' . 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 'pyload-ng' . | 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
pyload-ng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 pyload-ng to 0.5.0b3.dev101ステージング環境で 0.5.0b3.dev101 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
- package github.com
- package pypi.org
- web github.com
- web github.com