HIGH

CVE-2026-71271

2026-08-05 CVSS v3.1

CVSS

8.5

Description

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 isInternalIP in internal/httpgetter/html_meta.go, which does.

Weakness (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

EPSS Score

0.24%

Probability of exploitation in next 30 days

15.3th percentile

References

https://github.com/usememos/memos https://github.com/usememos/memos/blob/main/internal/webhook/validate.go

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