LinkedIn Oncall 1.4.0 XSS

Anandhu Krishnan
Published on
10 Jan 2022


LinkedIn Oncall is the on-call management and scheduling system at LinkedIn. It offers highly customizable scheduling for on-call shifts, as well as a streamlined UI for editing, swapping, and overriding on-call shifts.

LinkedIn Oncall through 1.4.0 allows reflected XSS via /query because of mishandling of the “No results found for” message in the search bar.


  • If attackers can control the script which is executed in the victim’s browser, by intentionally installing RAT, then the attacker can fully compromise that user’s device

  • Attackers can change any information that the user is able to change

  • Attackers can display any information that the user is able to do

  • Attackers can perform any action on the user’s behalf


  • Update LinkedIn Oncall to the latest version.
Automated human-like penetration testing for your web apps & APIs
Teams using Beagle Security are set up in minutes, embrace release-based CI/CD security testing and save up to 65% with timely remediation of vulnerabilities. Sign up for a free account to see what it can do for you.

Written by
Anandhu Krishnan
Anandhu Krishnan
Lead Engineer
Find website security issues in a flash
Improve your website's security posture with proactive vulnerability detection.
Free website security assessment