# github.com/cloudflare/circl (Go) vulnerabilities Source: https://junglewise.ai/threats/technologies/github-com-cloudflare-circl Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/github-com-cloudflare-circl.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 6 vulnerabilities in github.com/cloudflare/circl (Go): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-1229, was published on 27 February 2026. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 6 (0 critical, 0 exploited in the wild) ## About github.com/cloudflare/circl (Go) Go cryptography library implementing post-quantum and traditional cryptographic algorithms. ## Latest github.com/cloudflare/circl (Go) vulnerabilities - [CVE-2026-1229: GO-2026-4550 - CIRCL has an incorrect calculation in secp384r1 CombinedMult in github.com/cloudflare/circl](https://junglewise.ai/threats/cve-2026-1229-circl-has-an-incorrect-calculation-in-secp384r1-combinedmult) (medium, CVSS 4, published 27 Feb 2026) - [Duplicate Advisory: CIRCL-Fourq: Missing and wrong validation can lead to incorrect results](https://junglewise.ai/threats/duplicate-advisory-circl-fourq-missing-and-wrong-validation-can-lead-to-df43a87c) (low, CVSS 3.1, published 6 Aug 2025) - [CVE-2025-8556: GO-2025-3754 - CIRCL-Fourq: Missing and wrong validation can lead to incorrect results in github.com/cloudflare/circl](https://junglewise.ai/threats/cve-2025-8556-circl-fourq-missing-and-wrong-validation-can-lead-to-incorrect) (low, CVSS 3.1, published 11 Jun 2025) - [GO-2024-2453 - Timing side channel in github.com/cloudflare/circl](https://junglewise.ai/threats/go-2024-2453-timing-side-channel-in-github-com-cloudflare-circl-86e2bcc1) (info, published 18 Jan 2024) - [CIRCL's Kyber: timing side-channel (kyberslash2)](https://junglewise.ai/threats/circl-s-kyber-timing-side-channel-kyberslash2-9a5b4be8) (info, published 8 Jan 2024) - [CVE-2023-1732: GO-2023-1765 - Leaked shared secret and weak blinding in github.com/cloudflare/circl](https://junglewise.ai/threats/cve-2023-1732-improper-random-reading-in-circl) (low, CVSS 3.1, published 24 May 2023) ## Most severe github.com/cloudflare/circl (Go) vulnerabilities - [CVE-2026-1229: GO-2026-4550 - CIRCL has an incorrect calculation in secp384r1 CombinedMult in github.com/cloudflare/circl](https://junglewise.ai/threats/cve-2026-1229-circl-has-an-incorrect-calculation-in-secp384r1-combinedmult) (medium, CVSS 4, published 27 Feb 2026) - [CVE-2025-8556: GO-2025-3754 - CIRCL-Fourq: Missing and wrong validation can lead to incorrect results in github.com/cloudflare/circl](https://junglewise.ai/threats/cve-2025-8556-circl-fourq-missing-and-wrong-validation-can-lead-to-incorrect) (low, CVSS 3.1, published 11 Jun 2025) - [CVE-2023-1732: GO-2023-1765 - Leaked shared secret and weak blinding in github.com/cloudflare/circl](https://junglewise.ai/threats/cve-2023-1732-improper-random-reading-in-circl) (low, CVSS 3.1, published 24 May 2023) - [Duplicate Advisory: CIRCL-Fourq: Missing and wrong validation can lead to incorrect results](https://junglewise.ai/threats/duplicate-advisory-circl-fourq-missing-and-wrong-validation-can-lead-to-df43a87c) (low, CVSS 3.1, published 6 Aug 2025) - [GO-2024-2453 - Timing side channel in github.com/cloudflare/circl](https://junglewise.ai/threats/go-2024-2453-timing-side-channel-in-github-com-cloudflare-circl-86e2bcc1) (info, published 18 Jan 2024) - [CIRCL's Kyber: timing side-channel (kyberslash2)](https://junglewise.ai/threats/circl-s-kyber-timing-side-channel-kyberslash2-9a5b4be8) (info, published 8 Jan 2024) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Go technologies - [github.com/mattermost/mattermost-server (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server): 297 vulnerabilities - [github.com/mattermost/mattermost-server/v6 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v6): 222 vulnerabilities - [github.com/mattermost/mattermost/server/v8 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8): 207 vulnerabilities - [github.com/mattermost/mattermost-server/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5): 199 vulnerabilities - [stdlib (Go)](https://junglewise.ai/threats/technologies/go-stdlib): 178 vulnerabilities - [github.com/siyuan-note/siyuan/kernel (Go)](https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel): 160 vulnerabilities - [code.gitea.io/gitea (Go)](https://junglewise.ai/threats/technologies/code-gitea-io-gitea): 126 vulnerabilities - [code.vikunja.io/api (Go)](https://junglewise.ai/threats/technologies/code-vikunja-io-api): 91 vulnerabilities - [gogs.io/gogs (Go)](https://junglewise.ai/threats/technologies/gogs-io-gogs): 81 vulnerabilities - [github.com/traefik/traefik/v2 (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2): 78 vulnerabilities - [github.com/traefik/traefik (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik): 75 vulnerabilities - [github.com/usememos/memos (Go)](https://junglewise.ai/threats/technologies/github-com-usememos-memos): 75 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "github.com/cloudflare/circl (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-cloudflare-circl, 13 November 2026.