What is CVE-2026-75597?

CVE-2026-75597 is a medium-severity vulnerability in Pyload, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.3/10. Published 2026-10-09.

How severe is CVE-2026-75597?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Pyload

CVE-2026-75597

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev101, the `/web/<path:filename>` 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. Version 0.5.0b3.dev101 contains a patch.

Published 2026-10-09 · last modified 2026-10-09.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Pyload — versions < 0.5.0b3.dev101

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-75597?: CVE-2026-75597 is a medium-severity vulnerability in Pyload, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.3/10. Published 2026-10-09.
How severe is CVE-2026-75597?: Medium severity. CVSS v3 base score is 5.3 out of 10.