CVE-2026-108864: iFlytek Astron Agent through 1.1.2 Authorization Bypass via /workflow/v1/resume Endpoint

Severity: medium (CVSS 4.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-11 · updated 2026-10-18
Weakness: CWE-639

Description

iFlytek Astron Agent through 1.1.2 contains an insecure direct object reference vulnerability that allows authenticated applications to resume other applications' paused workflows by supplying their event_id to POST /workflow/v1/resume. Attackers can predict Snowflake event IDs to inject resume content into victim workflows and read their continuation output stream, breaking cross-tenant isolation.

Affected products

iflytek astron-agent: through 1.1.2

References

https://github.com/iflytek/astron-agent
https://github.com/iflytek/astron-agent/blob/v1.1.2/core/workflow/api/v1/chat/open.py#L106-L183
https://github.com/iflytek/astron-agent/blob/v1.1.2/core/workflow/cache/event_registry.py
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/iflytek-astron-agent-cross-app-workflow-resume
https://www.vulncheck.com/advisories/iflytek-astron-agent-through-1.1.2-authorization-bypass-via-workflow-v1-resume-endpoint

Get alerted when CVE-2026-108864 or the next vulnerability affects your stack