CVE-2023-37978

Medium

Published: 13 November 2023

Published

13 November 2023

Modified

28 April 2026

KEV Added

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Patch

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CVSS Score v3.1 4.4 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

EPSS Score 0.0015 35.1th percentile

Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-37978 is a medium-severity SSRF (CWE-918) vulnerability in Riverside Http Headers. Its CVSS base score is 4.4 (Medium).

Operationally, ranked at the 35.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Server-Side Request Forgery (SSRF) vulnerability in Dimitar Ivanov HTTP Headers.This issue affects HTTP Headers: from n/a through 1.18.11.

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

riverside

http headers

≤ 1.18.11

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-918

Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.

addresses: CWE-918

Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.

addresses: CWE-918

Validates server-side URLs and resource references to block SSRF attempts.

addresses: CWE-918

Detects server-side request forgery through monitoring of unexpected outbound connections.