CVE-2026-108853 (CVSS 8.1)

Description

UnicomAI Wanwu before 0.6.3 contains an insecure direct object reference vulnerability that allows authenticated low-privileged users to delete other tenants' agent or RAG applications by supplying their appId. Attackers can send requests to DELETE /v1/appspace/app with guessed sequential assistant IDs to permanently delete victims' applications, workflows, conversations, and associated data.

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CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS — Exploit Prediction

0.0030

Probability of exploitation

0.21%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

References

Other References

https://github.com/UnicomAI/wanwu https://github.com/UnicomAI/wanwu/blob/v0.6.2/internal/bff-service/service/appspace.go#L20-L58 https://github.com/UnicomAI/wanwu/commit/13d0b225ec237d5a0b44730b2331efadaeb462a2 https://github.com/UnicomAI/wanwu/releases/tag/v0.6.3 https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/unicomai-wanwu-appspace-cross-owner-delete https://www.vulncheck.com/advisories/unicomai-wanwu-before-0.6.3-idor-via-delete-v1-appspace-app https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/cve-2026-108853-unicomai-wanwu-appspace-cross-owner-delete

Frequently Asked Questions

What is CVE-2026-108853? +

UnicomAI Wanwu before 0.6.3 contains an insecure direct object reference vulnerability that allows authenticated low-privileged users to delete other tenants' agent or RAG applications by supplying their appId. Attackers can send requests to DELETE /v1/appspace/app with guessed sequential assistant IDs to permanently delete victims' applications, workflows, conversations, and associated data. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-108853? +

CVE-2026-108853 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0030, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-108853? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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