Vuln Signal Radar
public-safe defensive signal
MEDIUMpublic-safe

CVE-2026-75511

NVD: Novu provides an API for sending notifications through multiple channels. NVD: An authenticated user can supply an internal or otherwise restricted destination because these paths do not apply normalizeOutboundHttpUrl, assertSafeOutboundUrl, or the DNS-pinned safeOutboundJsonRequest protection used by the generic webhook providers. NVD: The Novu worker can consequently issue attacker-directed POST requests to internal network services and cause interactions or actions supported by those services.

CVSS
5.3
Severity
MEDIUM
EPSS
0.0046 (38)
KEV
-

Source-published summary

NVD: Novu provides an API for sending notifications through multiple channels. NVD: An authenticated user can supply an internal or otherwise restricted destination because these paths do not apply normalizeOutboundHttpUrl, assertSafeOutboundUrl, or the DNS-pinned safeOutboundJsonRequest protection used by the generic webhook providers. NVD: The Novu worker can consequently issue attacker-directed POST requests to internal network services and cause interactions or actions supported by those services.

Possible impact

This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for defensive exposure review.

Affected context

Affected product or version requires source confirmation.

Remediation / advisory

Patch confirmed by source text; fixed version context: 3.18.0..

Why it matters

This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for defensive exposure review.; CVSS 5.3 (MEDIUM); EPSS percentile 38; not listed in KEV; Patch confirmed by source text; fixed version context: 3.18.0; sources: NVD, OSV.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

exposure unknown

Impact tags

明示タグなし

Urgency reasons

vendor advisory presentrecent updateremediation reference present

Source-derived note

Summary derived from NVD / OSV description; unsafe procedural detail is not shown.

Redaction metadata

source summary used
True
fallback summary used
False
unsafe procedural detail present
false
raw source displayed
false
public summary redacted
true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.

Official references