Auth bypass in Dromara Lamp-Cloud
CVE-2026-91996
lamp-cloud through 5.10.0 whitelists the path pattern /*/anno/** for anonymous access, allowing unauthenticated attackers to read the server's full JVM system property map. Attackers can send POST requests to /defGenProject/anno/getProperties to retrieve sensitive information including JVM classpath, filesystem paths, operating system details, and startup secrets.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/geo-chen/oss/blob/main/lamp-cloud.md (exploit, third-party-advisory)
- github.com/dromara/lamp-cloud/blob/bdc1a406eb0f6291e9f6dbad9cbccd67bc6a37b6/lam… (technical-description)
- github.com/dromara/lamp-cloud/blob/bdc1a406eb0f6291e9f6dbad9cbccd67bc6a37b6/lam… (technical-description)
- github.com/dromara/lamp-cloud (product)
- www.vulncheck.com/advisories/lamp-cloud-through-5.10.0-missing-authentication-f… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-91996?
- CVE-2026-91996 is a high-severity vulnerability in Dromara Lamp-Cloud, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-09-15.
- How severe is CVE-2026-91996?
- High severity. CVSS v3 base score is 7.5 out of 10.