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Fencer Vulns
critical 9.8

CVE-2026-1229 json

Incorrect calculation in CIRCL secp384r1 CombinedMult

published 2026-02-24 8 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-7384 , GHSA-q9hv-hpm4-hj6x , GO-2026-4550

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

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 .

Patch / fix

  • go github.com/cloudflare/circl 1.6.3
  • Cloudflare CIRCL 1.6.3
  • system-user-grafana SLE Module for Package Hub 15 SP7 1.0.0-150200.5.8.1
  • grafana SLE Module for Package Hub 15 SP7 12.4.10-150200.3.94.3
  • grafana Multi Linux Manager Tools SLE-15 12.4.10-150002.4.27.1
  • mgr-push Multi Linux Manager Tools SLE-15 5.2.5-150002.3.12.1
  • spacecmd Multi Linux Manager Tools SLE-15 5.2.10-150002.3.15.1
  • uyuni-tools Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 5.2.17-150002.3.20.1
  • venv-salt-minion Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 3006.0-150002.5.22.1
  • spacewalk-client-tools Multi Linux Manager Tools SLE-15 5.2.7-150002.3.12.1

suse advisories SUSE-SU-2026:4600-1SUSE-SU-2026:4585-1SUSE-SU-2026:23853-1SUSE-SU-2026:23865-1SUSE-SU-2026:4210-1SUSE-SU-2026:2468-1

  • grafana openSUSE Leap 16.0 12.4.10-bp160.1.1
  • alloy openSUSE Leap 16.0 1.18.0-160000.1.1
  • gopass openSUSE Tumbleweed 1.17.0-1.1
  • grafana openSUSE Tumbleweed 12.4.5-4.1
  • alloy openSUSE Tumbleweed 1.18.0-1.1
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • go-sendxmpp openSUSE Leap 16.0 0.16.0-bp160.1.1
  • go-sendxmpp openSUSE Tumbleweed 0.16.0-1.1

opensuse advisories openSUSE-SU-2026:22125-1openSUSE-SU-2026:21899-1openSUSE-SU-2026:11650-1openSUSE-SU-2026:11619-1openSUSE-SU-2026:11438-1openSUSE-SU-2026:21483-1

  • rclone Alpine 3.24 1.73.5-r0

alpine advisories ALPINE-CVE-2026-1229

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-1229 updated cvss 5.6

github.com/cloudflare/circl/ecc/p384: CIRCL ecc/p384: Incorrect cryptographic calculations via specific inputs

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 2.9 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
CNA 4.0 2.9 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:X/V:X/RE:X/U:Amber
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/cloudflare/circl
<1.6.3
1.6.3

Affected products

  • Cloudflare CIRCL

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.