CVE-2026-18481: Stored XSS in Participant URL Field leads to Account Takeover via Session Token Theft

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-31 · updated 2026-10-23
Weakness: CWE-79

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.

Affected products

AWS Ops Wheel: through PR168

References

https://aws.amazon.com/security/security-bulletins/2026-068-aws/
https://github.com/aws/aws-ops-wheel/pull/168
https://github.com/aws/aws-ops-wheel/security/advisories/GHSA-6rr8-cf9x-pj23

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