# github.com/klauspost/compress (Go) vulnerabilities Source: https://junglewise.ai/threats/technologies/github-com-klauspost-compress 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-klauspost-compress.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 3 vulnerabilities in github.com/klauspost/compress (Go): 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-116591, was published on 26 October 2026. 1 vulnerability in the last four weeks, level on the four before (1). ## Counts - Last 7 days: 0 - Last 30 days: 1 - Last 90 days: 2 - All time: 3 (0 critical, 0 exploited in the wild) ## About github.com/klauspost/compress (Go) Go library providing high-speed compression and decompression for various formats. ## Latest github.com/klauspost/compress (Go) vulnerabilities - [CVE-2026-116591: Klaus Post compress zstd decoder panic on crafted input](https://junglewise.ai/threats/cve-2026-116591-compress-provides-various-compression-algorithms-prior-to-1-20-2) (high, CVSS 4, published 26 Oct 2026) - [CVE-2026-63209: klauspost compress signed integer overflow in s2.NewDict](https://junglewise.ai/threats/cve-2026-63209-compress-provides-various-compression-algorithms-prior-to-version) (high, CVSS 7.5, published 29 Sep 2026) - [GO-2026-5841 - OOB read in github.com/klauspost/compress/s2](https://junglewise.ai/threats/go-2026-5841-oob-read-in-github-com-klauspost-compress-s2-bc43eef4) (info, published 27 Jul 2026) ## Most severe github.com/klauspost/compress (Go) vulnerabilities - [CVE-2026-63209: klauspost compress signed integer overflow in s2.NewDict](https://junglewise.ai/threats/cve-2026-63209-compress-provides-various-compression-algorithms-prior-to-version) (high, CVSS 7.5, published 29 Sep 2026) - [CVE-2026-116591: Klaus Post compress zstd decoder panic on crafted input](https://junglewise.ai/threats/cve-2026-116591-compress-provides-various-compression-algorithms-prior-to-1-20-2) (high, CVSS 4, published 26 Oct 2026) - [GO-2026-5841 - OOB read in github.com/klauspost/compress/s2](https://junglewise.ai/threats/go-2026-5841-oob-read-in-github-com-klauspost-compress-s2-bc43eef4) (info, published 27 Jul 2026) ## Vulnerabilities per week 1 vulnerability in the last four weeks, level on the four before (1). | 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 | 1 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 1 | 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/klauspost/compress (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-klauspost-compress, 13 November 2026.