CVE-2022-44303
MEDIUMResque Scheduler version 1.27.4 is vulnerable to Cross-site scripting (XSS). A remote attacker could inject javascript code to the "{schedule_job}" or "args" parameter in /resque/delayed/jobs/{schedule_job}?args={args_id}…
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Description
Resque Scheduler version 1.27.4 is vulnerable to Cross-site scripting (XSS). A remote attacker could inject javascript code to the "{schedule_job}" or "args" parameter in /resque/delayed/jobs/{schedule_job}?args={args_id} to execute javascript at client side.
Affected Products
resque-schedulerresque-scheduler_projectResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Vendor / applianceDetect
Inventory every resque-scheduler_project resque-scheduler deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Remediation status
No patch has shipped for CVE-2022-44303 yet — track the resque-scheduler_project resque-scheduler advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2022-44303 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.
Tailored to CVE-2022-44303. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2022-44303 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2022-44303 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.