SSRF in Usememos Memos
CVE-2026-71271
Memos' webhook URL validation, isReservedIP() (internal/webhook/validate.go), checks a candidate IP against a reservedCIDRs list that omits 0.0.0.0/8 and never calls ip.IsUnspecified() — unlike the correctly implemented sibling function is…
Vulnerability class: SSRF (Server-Side Request Forgery)
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
Affected products
- Usememos Memos — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-71271?
- CVE-2026-71271 is a high-severity vulnerability in Usememos Memos, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.5/10. Published 2026-08-05.
- How severe is CVE-2026-71271?
- High severity. CVSS v3 base score is 8.5 out of 10.