CVE-2026-108855: Auth Bypass (CVSS 5.4)

Description

UnicomAI Wanwu through 0.6.5 contains a missing authorization vulnerability that allows any authenticated enabled user to revoke other users' AppKeys for arbitrary apps via the unpublish endpoint. Attackers can supply a target appId and appType from the exploration marketplace to delete other users' api_key rows across organizations, cutting off MCP and OpenAPI client access.

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CVSS v3.1 Score

5.4

MEDIUM

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

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.11%

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-862 Missing Authorization

References

Other References

https://github.com/UnicomAI/wanwu https://github.com/UnicomAI/wanwu/blob/v0.6.5/internal/app-service/client/orm/app.go#L48-L68 https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/unicomai-wanwu-unpublish-revokes-consumer-appkeys https://www.vulncheck.com/advisories/unicomai-wanwu-through-0.6.5-missing-authorization-via-delete-v1-appspace-app-publish

Frequently Asked Questions

What is CVE-2026-108855? +

UnicomAI Wanwu through 0.6.5 contains a missing authorization vulnerability that allows any authenticated enabled user to revoke other users' AppKeys for arbitrary apps via the unpublish endpoint. Attackers can supply a target appId and appType from the exploration marketplace to delete other users' api_key rows across organizations, cutting off MCP and OpenAPI client access. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-108855? +

CVE-2026-108855 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-108855? +

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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