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Vulnerability details: VCID-82wq-13vf-ufb2
Vulnerability ID VCID-82wq-13vf-ufb2
Aliases CVE-2026-1229
GHSA-q9hv-hpm4-hj6x
Summary CIRCL has an incorrect calculation in secp384r1 CombinedMult 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](https://github.com/cloudflare/circl/releases/tag/v1.6.3)**.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-682 Incorrect Calculation
System Score Found at
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2026-1229
cvssv4 2.9 https://github.com/cloudflare/circl
generic_textual LOW https://github.com/cloudflare/circl
ssvc Track https://github.com/cloudflare/circl
cvssv4 2.9 https://github.com/cloudflare/circl/pull/583
generic_textual LOW https://github.com/cloudflare/circl/pull/583
cvssv4 2.9 https://github.com/cloudflare/circl/releases/tag/v1.6.3
generic_textual LOW https://github.com/cloudflare/circl/releases/tag/v1.6.3
cvssv4 2.9 https://github.com/cloudflare/circl/security/advisories/GHSA-q9hv-hpm4-hj6x
generic_textual LOW https://github.com/cloudflare/circl/security/advisories/GHSA-q9hv-hpm4-hj6x
cvssv4 2.9 https://nvd.nist.gov/vuln/detail/CVE-2026-1229
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2026-1229
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-1229
https://github.com/cloudflare/circl
https://github.com/cloudflare/circl/pull/583
https://github.com/cloudflare/circl/releases/tag/v1.6.3
https://github.com/cloudflare/circl/security/advisories/GHSA-q9hv-hpm4-hj6x
https://nvd.nist.gov/vuln/detail/CVE-2026-1229
No exploits are available.
Vector: 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 Found at https://github.com/cloudflare/circl
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-24T15:04:09Z/ Found at https://github.com/cloudflare/circl
Vector: 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 Found at https://github.com/cloudflare/circl/pull/583
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: 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 Found at https://github.com/cloudflare/circl/releases/tag/v1.6.3
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

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Vector: 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 Found at https://github.com/cloudflare/circl/security/advisories/GHSA-q9hv-hpm4-hj6x
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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present

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Vector: 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 Found at https://nvd.nist.gov/vuln/detail/CVE-2026-1229
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

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Exploit Prediction Scoring System (EPSS)
Percentile 0.05796
EPSS Score 0.00022
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:52:49.026829+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-q9hv-hpm4-hj6x/GHSA-q9hv-hpm4-hj6x.json 38.0.0