CVE-2026-97152

Description

Nanomsg versions 0.5-beta through 1.x before 1.2.3 has a remotely exploitable buffer overflow in the WebSocket transport, due to an unchecked copy of the Sec-WebSocket-Version header, through snprintf.

Overview

State: PUBLISHED
Assigner (CNA): mitre
CVSS severity: HIGH
CVSS score: 8.6 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:H/SI:H/SA:H
Effective score: 8.6 / 10 HIGH source: CNA overview
CWE(s): CWE-122
Reserved: 2026-09-24
Published: 2026-09-24 03:17 UTC
Last updated: 2026-09-24 12:47 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/97xxx/CVE-2026-97152.json
Linked Threat: CVE-2026-97152 — CVE-2026-97152

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

EPSS score: 0.0031 (probability of exploitation in next 30 days)
EPSS percentile: 21.51% vs all CVEs — higher = more likely to be exploited, as of 2026-09-24

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-85784
Assigner: mitre
Published: Sep 24, 2026, 3:17:23 AM
Updated: Sep 24, 2026, 12:47:21 PM
EUVD base score (CVSS 4.0): 8.6 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:H/SI:H/SA:H
EUVD-reported EPSS: 0.3100
Vendors: Nanomsg
Products: Nanomsg (0.5.0 <1.2.3)
Aliases: GHSA-qf87-675j-h456

ENISA description: Nanomsg versions 0.5-beta through 1.x before 1.2.3 has a remotely exploitable buffer overflow in the WebSocket transport, due to an unchecked copy of the Sec-WebSocket-Version header, through snprintf.

EUVD references (3)

Affected products (1)

Vendor	Product	Versions	Platforms
Nanomsg	Nanomsg	`0.5.0` (affected)	—

Vendor references (3)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-97152.json.

{
  "containers": {
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                "id": "CVE-2026-97152",
                "options": [
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-24T12:46:52.122399Z",
                "version": "2.0.3"
              },
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          "programFiles": [
            "ws_handshake.c"
          ],
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          "vendor": "Nanomsg",
          "versions": [
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            }
          ]
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      ],
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          "supportingMedia": [
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              "base64": false,
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          ],
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        }
      ],
      "x_generator": {
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    "datePublished": "2026-09-24T03:17:23.503Z",
    "dateReserved": "2026-09-24T03:17:23.134Z",
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