CVE-2026-18481 Stored XSS in Participant URL Field leads to Account Takeover via Session Token Theft
An authenticated attacker can steal session tokens via stored XSS in the participant URL field, leading to full administrative control of the AWS Ops Wheel instance.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-18481?
CVE-2026-18481 is a medium-severity cross-site scripting vulnerability in AWS Ops Wheel, published on 31 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Stored cross-site scripting in the participant URL handling in AWS Ops Wheel before PR #168 might allow an authenticated remote user to steal session tokens and escalate to full administrative control of the deployed instance via a crafted participant_url value containing a dangerous URI scheme.
To remediate this issue, users should redeploy from the latest version of aws-ops-wheel.
Weakness: CWE-79
Which versions are affected by CVE-2026-18481?
How do I fix CVE-2026-18481?
No fix has been published for CVE-2026-18481 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-18481 being exploited?
There is no known exploitation of CVE-2026-18481 in the wild and no public exploit code.