Vulnerability-Lookup

GHSA-Q9HV-HPM4-HJ6X

Vulnerability from github – Published: 2026-02-25 19:17 – Updated: 2026-02-25 19:17

Summary

CIRCL has an incorrect calculation in secp384r1 CombinedMult

Details

The CombinedMult function in the CIRCL ecc/p384 package (secp384r1 curve) produces an incorrect value for specific inputs. The issue is fixed by using complete addition formulas. ECDH and ECDSA signing relying on this curve are not affected.

The bug was fixed in v1.6.3.

Severity ?

2.9 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/U:Amber

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/cloudflare/circl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-1229"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-682"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-25T19:17:50Z",
    "nvd_published_at": "2026-02-24T08:16:28Z",
    "severity": "LOW"
  },
  "details": "The CombinedMult function in the CIRCL ecc/p384 package (secp384r1 curve) produces an incorrect value for specific inputs. The issue is fixed by using complete addition formulas.\nECDH and ECDSA signing relying on this curve are not affected.\n\nThe bug was fixed in **[v1.6.3](https://github.com/cloudflare/circl/releases/tag/v1.6.3)**.",
  "id": "GHSA-q9hv-hpm4-hj6x",
  "modified": "2026-02-25T19:17:50Z",
  "published": "2026-02-25T19:17:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cloudflare/circl/security/advisories/GHSA-q9hv-hpm4-hj6x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1229"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cloudflare/circl/pull/583"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/cloudflare/circl"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cloudflare/circl/releases/tag/v1.6.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/U:Amber",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CIRCL has an incorrect calculation in secp384r1 CombinedMult"
}

CVE-2026-1229 (GCVE-0-2026-1229)

Vulnerability from cvelistv5 – Published: 2026-02-24 07:58 – Updated: 2026-02-24 15:10

Title

Incorrect calculation in CIRCL secp384r1 CombinedMult

Summary

Severity ?

2.9 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/U:Amber

CWE

CWE-682 - Incorrect Calculation

Assigner

cloudflare

References

URL

Tags

https://github.com/cloudflare/circl

Impacted products

	Vendor	Product	Version
	Cloudflare	CIRCL	Affected: CIRCL up to version 1.6.2 , < 1.6.3 (custom)

Credits

Guido Vranken

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-1229",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-24T15:04:09.395394Z",
                "version": "2.0.3"
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          "vendor": "Cloudflare",
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        "orgId": "a22f1246-ba21-4bb4-a601-ad51614c1513",
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      "references": [
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          "url": "https://github.com/cloudflare/circl"
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-Q9HV-HPM4-HJ6X

CVE-2026-1229 (GCVE-0-2026-1229)

Tags

Sightings

Nomenclature