CVE-2026-33140CWE-79

PySpector: Stored XSS in PySpector HTML Report Generation leads to Javascript Code Execution

Medium · published March 20, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
18.4
In the wild
Unconfirmed
What it is

PySpector is a static analysis security testing (SAST) Framework engineered for modern Python development workflows. PySpector versions 0.1.6 and prior are affected by a stored Cross-Site Scripting (XSS) vulnerability in the HTML report generator. When PySpector scans a Python file containing JavaScript payloads (i.e. inside a string passed to eval() ), the flagged code snippet is interpolated into the HTML report without sanitization. Opening the generated report in a browser causes the embedded JavaScript to execute in the browser's local file context. This issue has been patched in version 0.1.7.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00271 · 18.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-20T20:00Z
EPSS history
Timeline
  • 20 MAR 20:00Z
    PySpector: Stored XSS in PySpector HTML Report Generation leads to Javascript Code Execution
    cvelistv5