VulertSecurity VulertSecurity

Vulnerability Database · Go · Package report

github.com/klauspost/compress: vulnerability history, versions and safety

github.com/klauspost/compress is a package in the Go ecosystem. Vulert records 2 vulnerabilities for it across 120 releases, from Jul 2026 to Oct 2026. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

i
2 vulnerabilities recorded H1 U1
i
0 with no fix published

Every vulnerability has a patched version to move to.

i
2 in the last 12 months

Most recent disclosure 20 Oct 2026.

See the disclosure history →
i
0 malicious-package vulnerabilities

No published version shipped hostile code.

See all github.com/klauspost/compress vulnerabilities

Vulert verdict on github.com/klauspost/compress v1.20.3 i

Updated on 23 Oct 2026

Action needed: v1.20.3 has 1 known vulnerability, but every one of them has a fix. Upgrade to the version listed below and you are clear.

Package health score 82/100
  • Security Minor issues
  • Maintenance Sustainable
  • Popularity Key ecosystem project
  • Community Moderate

What to do: Upgrade to the version that resolves each vulnerability below. Fix it, then keep watch: this version is affected today, and the next one may be too — Vulert alerts you when a new vulnerability lands. Monitor it with Vulert →

  • Current release v1.20.3 — affected i
  • Vulnerabilities on record 2 over 1 year · 2 in the last year i
  • Latest disclosure 20 Oct 2026 i
  • Highest CVSS 7.5 i
  • With no published fix 0 i
  • Stars 5,691 i
  • OpenSSF scorecard 6/10 i
  • Last release this month i
  • Licence BSD-3-Clause i

Version list, release dates, licence and dependants published by the Go module proxy, refreshed 23 Oct 2026. Licence information is not legal advice.

Concerned about your application's security?

Vulert continues monitoring your dependencies and alerts you when new vulnerabilities are disclosed. No installation and no source-code access required.

01 Versions

Which versions are affected

Every version Vulert tracks for github.com/klauspost/compress, newest first, with the vulnerabilities recorded against each one. A version showing none has no vulnerability in the Vulert database — open it for the full picture on that release.

i
Version Released Vulert vulnerabilities Licence Fix published Details
v0.0.0-20261021155824-62d757cd8e6f 21 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261021155824-62d757cd8e6f 21 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261021124103-35c6f98a5cb9 21 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261019151349-c2cacb4dcf9f 19 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261019151349-c2cacb4dcf9f 19 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261019113106-6ce0477ba82e 19 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261019113106-6ce0477ba82e 19 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261019101332-2033f3fd935f 19 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261019101332-2033f3fd935f 19 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261016104145-920bb4bcc018 16 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261016104145-920bb4bcc018 16 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261014120259-6de8e38778cd 14 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261014120259-6de8e38778cd 14 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261013083539-f9c34280cd4d 13 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261013083539-f9c34280cd4d 13 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261012122955-1974577b19ef 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.4-0.20261012122955-1974577b19ef 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261012091921-b946d41b75ce 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20261012091921-b946d41b75ce 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.3 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261012083505-748550b77336 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20261012083505-748550b77336 12 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261008075019-dd54d8695696 08 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20261008075019-dd54d8695696 08 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261004115517-d189b4c2eb01 04 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20261004115517-d189b4c2eb01 04 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261002184158-6b9199594fc5 02 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20261002184158-6b9199594fc5 02 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261002144111-402c3a567166 02 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20261002144111-402c3a567166 02 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20261002092525-29f5f81f681b 02 Oct 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20261002092525-29f5f81f681b 02 Oct 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260930084646-9b8ba6149408 30 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260930084646-9b8ba6149408 30 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260930073221-da4df9cb2b3c 30 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260930073221-da4df9cb2b3c 30 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260930071323-9abcafbf831e 30 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260930071323-9abcafbf831e 30 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260929152137-4e2dcf8a72b0 29 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260929152137-4e2dcf8a72b0 29 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260929094910-699c61827bcd 29 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260929094910-699c61827bcd 29 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260929074654-5d45bca0cdb5 29 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260929074654-5d45bca0cdb5 29 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260928201310-179d9a25ce9d 28 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260928174306-0533a6752647 28 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260928174306-0533a6752647 28 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260928121249-8219c0c5fb34 28 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260928121249-8219c0c5fb34 28 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260928094042-2393e1cb51b2 28 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260928083003-258a0cee549b 28 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260925084326-e4086c1ba492 25 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.2-0.20260925084326-e4086c1ba492 25 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1 25 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260923150651-5ed8a01b0df5 23 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260923141120-0bed72427862 23 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260922163014-9b00a552dd3c 22 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260922163014-9b00a552dd3c 22 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260915094655-de8f55df9fb3 15 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260915094655-de8f55df9fb3 15 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260914120048-a1c49c64983e 14 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260914120048-a1c49c64983e 14 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260911112655-7dc45b1e13a2 11 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260911112655-7dc45b1e13a2 11 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260911093121-b8824569b966 11 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260911093121-b8824569b966 11 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260909075634-5e17c92e03c6 09 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260909075634-5e17c92e03c6 09 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260908090633-fc272ea38376 08 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260904115809-75489f96c542 04 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260904115809-75489f96c542 04 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.1-0.20260904102519-dc3d00033ee4 04 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.20.0 02 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260902082805-f93f23a4bd54 02 Sep 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260902082805-f93f23a4bd54 02 Sep 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260831134805-42f9d969024a 31 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260831134805-42f9d969024a 31 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260831121017-629c2ea148ae 31 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260817121505-73508b25f222 17 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260817121505-73508b25f222 17 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260817095309-0e43f04adae8 17 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260817095309-0e43f04adae8 17 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260817074646-4005c155a267 17 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260811110452-dd6de45e8beb 11 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260811110452-dd6de45e8beb 11 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260807134503-07f8bcdd5278 07 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.3-0.20260807134503-07f8bcdd5278 07 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.2 05 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.2-0.20260805155651-c3b3439a4819 05 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.2-0.20260805143402-9874bc9073f3 05 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260805082254-71bb6fd9ddbf 05 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.2-0.20260805082254-71bb6fd9ddbf 05 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.2-0.20260805074709-3d4dacbaa9fa 05 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260804151145-3ceaa81409aa 04 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.2-0.20260804151145-3ceaa81409aa 04 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260804091756-72cb4d3e8e74 04 Aug 2026 H1 BSD-3-Clause Yes Details →
v1.19.2-0.20260804091756-72cb4d3e8e74 04 Aug 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260730083710-69c9db420ae5 30 Jul 2026 H1 BSD-3-Clause Yes Details →
v1.19.2-0.20260730083710-69c9db420ae5 30 Jul 2026 H1 BSD-3-Clause Yes Details →
v0.0.0-20260721100123-117430d3b0e3 21 Jul 2026 H1 — Yes Details →
v1.19.2-0.20260721100123-117430d3b0e3 21 Jul 2026 H1 — Yes Details →
v0.0.0-20260720135525-c73af0c12cc7 20 Jul 2026 H1 — Yes Details →
v1.19.2-0.20260720135525-c73af0c12cc7 20 Jul 2026 H1 — Yes Details →
v1.19.1 20 Jul 2026 H1 — Yes Details →
v0.0.0-20260717091032-9960386c5845 17 Jul 2026 H1 — Yes Details →
v1.19.1-0.20260717091032-9960386c5845 17 Jul 2026 H1 — Yes Details →
v0.0.0-20260715101459-e29d4d389f0e 15 Jul 2026 H1 — Yes Details →
v1.19.1-0.20260715101459-e29d4d389f0e 15 Jul 2026 H1 — Yes Details →
v0.0.0-20260710073621-c0bbc84762b7 10 Jul 2026 H1 — Yes Details →
v1.19.1-0.20260710073621-c0bbc84762b7 10 Jul 2026 H1 — Yes Details →
v0.0.0-20260702093504-efdb6ed96c4b 02 Jul 2026 H1 — Yes Details →
v1.19.1-0.20260702093504-efdb6ed96c4b 02 Jul 2026 H1 — Yes Details →
v0.0.0-20260630132142-f0953f938f77 30 Jun 2026 H1 — Yes Details →
v1.18.7-0.20260630132142-f0953f938f77 30 Jun 2026 H1 — Yes Details →
v1.19.0 30 Jun 2026 H1 — Yes Details →
v0.0.0-20260630112908-ab2e3cc7ab26 30 Jun 2026 H1 — Yes Details →
v1.18.7-0.20260630112908-ab2e3cc7ab26 30 Jun 2026 H1 — Yes Details →
v1.18.7 30 Jun 2026 H1 — Yes Details →
v0.0.0-20260630093004-bb2723d55de8 30 Jun 2026 H1 — Yes Details →

The newest 120 of 1,288 versions Vulert tracks. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2026 2

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 2 of the 2 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for github.com/klauspost/compress

The 2 most severe of 2 vulnerabilities recorded for this package

Search all 2 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2026-63209: High Severity Integer Overflow and Out-of-bounds Write in github.com/klauspost/compress/s2 7.5 high 1.18.7 20 Oct 2026
Out-of-Bounds Read Vulnerability in github.com/klauspost/compress Package N/A unrated 1.18.7 27 Jul 2026

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →

Questions

About github.com/klauspost/compress

Is github.com/klauspost/compress safe to use?

Vulert records 2 vulnerabilities for github.com/klauspost/compress in Go: 0 critical, 1 high, 0 medium and 0 low, plus 1 not yet rated. Every one of them has a published fix, so the practical answer is to run a supported release and keep it patched.

What is github.com/klauspost/compress's Vulert package health score?

Vulert scores github.com/klauspost/compress 82/100, which reads as in good shape. The score weighs the vulnerability record (40), maintenance and release cadence (25), adoption from dependents and stars (20) and community signals such as the OpenSSF scorecard and forks (15).

Is the latest version of github.com/klauspost/compress affected?

Yes. v1.20.3, the version you would install today, has 1 known vulnerability, and every one of them has a published fix. Upgrade to the version listed for each.

Which version of github.com/klauspost/compress should I use?

v1.20.3 is the version Vulert recommends for the affected releases. The version table above lists every release with the vulnerabilities recorded against it, so you can confirm the range you actually run.

How many vulnerabilities does github.com/klauspost/compress have?

2 vulnerabilities are recorded for github.com/klauspost/compress in the Go ecosystem: 0 critical, 1 high, 0 medium and 0 low, plus 1 not yet rated. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new github.com/klauspost/compress vulnerabilities disclosed?

2 vulnerabilities were recorded for github.com/klauspost/compress in the last 12 months, and the oldest entry in this database dates to 27 Jul 2026. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of github.com/klauspost/compress are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor github.com/klauspost/compress for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the github.com/klauspost/compress version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.