CVE-2026-71271

—

CVSS 3.1

8.5 high

EPSS

<1%p15

Published

Aug 5, 2026 (Aug 5, 2026)

Modified

Aug 26, 2026

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-918
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.2%)

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