CVE-2026-63175CWE-613

Cross-Capture Session Data Leakage Due to Shared Mutable State in Looklyloo - PlaywrightCapture

High · published July 15, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
39.9
In the wild
Unconfirmed
What it is

PlaywrightCapture stored capture-specific configuration and runtime data as mutable class-level variables rather than instance-level variables. Consequently, multiple Capture objects running within the same Python process could share state, including HTTP headers, cookies, browser storage, HTTP credentials, proxy configuration, user-agent settings, geolocation information, and captured request data.

In a multi-user or concurrent deployment, information supplied during one capture could therefore persist and be reused by a subsequent or parallel capture. This could result in the disclosure of authentication cookies, credentials, browser storage, or captured request data belonging to another user. It could also cause requests to be performed with another capture's authentication context, headers, or proxy configuration, potentially enabling unauthorized access to remote resources or interference with other capture operations.

The vulnerability is resolved by initializing all capture-specific settings and request data as instance variables in the Capture constructor, ensuring that state is isolated between capture operations.

The record
Technical detail
CVSS v4.0
7.1 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
EPSS
0.00472 · 39.9th percentile
Weakness
CWE-613 · Insufficient Session Expiration
Published
2026-07-15T21:26Z
EPSS history
Timeline
  • 15 JUL 21:26Z
    Cross-Capture Session Data Leakage Due to Shared Mutable State in Looklyloo - PlaywrightCapture
    cvelistv5