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Vulnerability · Published May 11, 2026 · Assigned by GitHub_M

CVE-2026-44226pyLoad: Unauthenticated traceback disclosure via global exception handler in WebUI

Medium 5.3

In plain English

A medium-severity security flaw in pyload from pyload. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 72.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, pyload-ng WebUI returns full Python traceback details to clients on unhandled exceptions. Because /web/<path:filename> is reachable without authentication and renders attacker-controlled template names, an unauthenticated user can reliably trigger a server exception (for example by requesting a non-existent template) and receive internal stack traces in the HTTP response. This vulnerability is fixed in 0.5.0b3.dev100.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPIpyload-ng0.5.0b3.dev100GHSA-c3gc-9pf2-84gg
PyPIpyload-ng0.5.0b3.dev100PYSEC-2026-2993

Affected products (as reported)

VendorProductVersions
pyload pyload < 0.5.0b3.dev100

Weakness: CWE-209 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References