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Vulnerability Database · npm · Package report

mercurius: vulnerability history, versions and safety

mercurius is a package in the npm ecosystem. Vulert records 4 vulnerabilities for it across 114 releases, from Dec 2021 to Mar 2026. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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4 vulnerabilities recorded H1 M2 L1
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0 with no fix published

Every vulnerability has a patched version to move to.

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2 in the last 12 months

Most recent disclosure 06 Mar 2026.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all mercurius vulnerabilities

Vulert verdict on mercurius 16.12.0 i

Updated on 23 Oct 2026

Good news: 16.12.0, the version you would install today, has no known vulnerabilities. Older releases do — the table below lists all 4.

Package health score 75/100
  • Security Some issues to review
  • Maintenance Sustainable
  • Popularity Widely used
  • Community Quiet

What to do: Stay on 16.12.0 or newer. This can change: a vulnerability disclosed tomorrow can affect 16.12.0 too — Vulert watches the package and alerts you if that happens. Monitor it with Vulert →

  • Current release 16.12.0 — unaffected i
  • Vulnerabilities on record 4 over 4 years · 2 in the last year i
  • Latest disclosure 06 Mar 2026 i
  • Highest CVSS 7.5 i
  • With no published fix 0 i
  • Depended on by 80 packages i
  • Stars 2,491 i
  • OpenSSF scorecard 4/10 i
  • Last release this month i
  • Licence MIT i

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

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01 Versions

Which versions are affected

Every version Vulert tracks for mercurius, 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.

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Version Released Vulert vulnerabilities Licence Fix published Details
16.12.0 14 Oct 2026 none MIT — Details →
16.11.0 09 Oct 2026 none MIT — Details →
16.10.1 26 Sep 2026 none MIT — Details →
16.10.0 14 Jul 2026 none MIT — Details →
16.9.0 03 Apr 2026 none MIT — Details →
16.8.0 06 Mar 2026 none MIT — Details →
16.7.0 19 Jan 2026 L1 MIT Yes Details →
16.6.0 13 Nov 2025 L1 MIT Yes Details →
16.5.0 10 Oct 2025 L1 MIT Yes Details →
16.4.0 30 Sep 2025 L1 MIT Yes Details →
16.3.0 25 Sep 2025 M1 L1 MIT Yes Details →
16.2.0 19 Jun 2025 M1 L1 MIT Yes Details →
16.1.0 24 Feb 2025 M1 L1 MIT Yes Details →
16.0.1 14 Jan 2025 M1 L1 MIT Yes Details →
16.0.0 21 Dec 2024 M1 L1 MIT Yes Details →
15.1.0 14 Oct 2024 M1 L1 MIT Yes Details →
15.0.0 09 Sep 2024 M1 L1 MIT Yes Details →
14.1.0 22 Apr 2024 M1 L1 MIT Yes Details →
14.0.0 19 Mar 2024 M1 L1 MIT Yes Details →
13.4.1 18 Mar 2024 M1 L1 MIT Yes Details →
13.4.0 06 Mar 2024 M1 L1 MIT Yes Details →
13.3.3 26 Dec 2023 M1 L1 MIT Yes Details →
13.3.2 13 Dec 2023 M1 L1 MIT Yes Details →
13.3.1 19 Nov 2023 M1 L1 MIT Yes Details →
13.3.0 16 Nov 2023 M1 L1 MIT Yes Details →
13.2.2 26 Oct 2023 M1 L1 MIT Yes Details →
13.2.1 25 Oct 2023 M1 L1 MIT Yes Details →
13.2.0 23 Oct 2023 M1 L1 MIT Yes Details →
13.1.0 12 Jul 2023 M1 L1 MIT Yes Details →
13.0.0 27 Apr 2023 M1 L1 MIT Yes Details →
12.2.0 22 Feb 2023 M1 L1 MIT Yes Details →
12.1.0 17 Feb 2023 M1 L1 MIT Yes Details →
12.0.1 10 Feb 2023 M1 L1 MIT Yes Details →
12.0.0 30 Jan 2023 M1 L1 MIT Yes Details →
8.13.2 10 Jan 2023 M1 L1 MIT Yes Details →
11.5.0 08 Jan 2023 M1 L1 MIT Yes Details →
11.4.0 03 Dec 2022 M2 L1 MIT Yes Details →
11.3.0 02 Nov 2022 M2 L1 MIT Yes Details →
11.2.0 24 Oct 2022 M2 L1 MIT Yes Details →
11.1.0 20 Oct 2022 M2 L1 MIT Yes Details →
11.0.1 02 Oct 2022 M2 L1 MIT Yes Details →
11.0.0 02 Sep 2022 M2 L1 MIT Yes Details →
10.5.1 02 Sep 2022 M2 L1 MIT Yes Details →
10.5.0 30 Aug 2022 M2 L1 MIT Yes Details →
10.4.0 29 Aug 2022 M2 L1 MIT Yes Details →
10.3.0 27 Aug 2022 M2 L1 MIT Yes Details →
10.2.0 24 Aug 2022 M2 L1 MIT Yes Details →
10.1.1 17 Aug 2022 M2 L1 MIT Yes Details →
8.13.1 17 Aug 2022 M1 L1 MIT Yes Details →
8.13.0 29 Jul 2022 M1 L1 MIT Yes Details →
10.1.0 05 Jul 2022 M2 L1 MIT Yes Details →
10.0.0 09 Jun 2022 M2 L1 MIT Yes Details →
9.8.0 01 Jun 2022 M2 L1 MIT Yes Details →
9.7.0 31 May 2022 M2 L1 MIT Yes Details →
9.6.0 23 May 2022 M2 L1 MIT Yes Details →
9.5.0 04 May 2022 M2 L1 MIT Yes Details →
9.4.0 01 May 2022 M2 L1 MIT Yes Details →
8.12.2 24 Mar 2022 M1 L1 MIT Yes Details →
9.3.6 24 Mar 2022 M2 L1 MIT Yes Details →
8.12.1 10 Mar 2022 M1 L1 MIT Yes Details →
9.3.5 10 Mar 2022 M2 L1 MIT Yes Details →
9.3.4 09 Mar 2022 M2 L1 MIT Yes Details →
9.3.3 21 Feb 2022 M2 L1 MIT Yes Details →
9.3.2 14 Feb 2022 M2 L1 MIT Yes Details →
9.3.1 10 Feb 2022 M2 L1 MIT Yes Details →
9.3.0 07 Feb 2022 M2 L1 MIT Yes Details →
9.2.0 03 Feb 2022 M2 L1 MIT Yes Details →
9.1.0 23 Dec 2021 M2 L1 MIT Yes Details →
9.0.0 20 Dec 2021 M2 L1 MIT Yes Details →
8.12.0 13 Dec 2021 M1 L1 MIT Yes Details →
8.11.2 01 Dec 2021 M1 L1 MIT Yes Details →
8.11.1 01 Dec 2021 H1 M1 L1 MIT Yes Details →
8.11.0 29 Nov 2021 H1 M1 L1 MIT Yes Details →
8.10.0 24 Nov 2021 H1 M1 L1 MIT Yes Details →
8.9.1 10 Nov 2021 M1 L1 MIT Yes Details →
8.9.0 10 Nov 2021 M1 L1 MIT Yes Details →
8.8.0 25 Oct 2021 M1 L1 MIT Yes Details →
8.7.0 19 Oct 2021 M1 L1 MIT Yes Details →
8.6.0 06 Oct 2021 M1 L1 MIT Yes Details →
8.5.0 05 Oct 2021 M1 L1 MIT Yes Details →
8.4.2 24 Sep 2021 M1 L1 MIT Yes Details →
8.4.1 24 Sep 2021 M1 L1 MIT Yes Details →
8.4.0 23 Sep 2021 M1 L1 MIT Yes Details →
8.3.0 20 Sep 2021 M1 L1 MIT Yes Details →
8.2.1 07 Sep 2021 M1 L1 MIT Yes Details →
8.2.0 06 Sep 2021 M1 L1 MIT Yes Details →
8.1.3 20 Aug 2021 M1 L1 MIT Yes Details →
8.1.2 15 Aug 2021 M1 L1 MIT Yes Details →
8.1.1 28 Jul 2021 M1 L1 MIT Yes Details →
8.1.0 21 Jul 2021 M1 L1 MIT Yes Details →
8.0.0 06 Jul 2021 M1 L1 MIT Yes Details →
7.9.1 18 Jun 2021 M1 L1 MIT Yes Details →
7.9.0 15 Jun 2021 M1 L1 MIT Yes Details →
7.8.0 12 Jun 2021 M1 L1 MIT Yes Details →
7.7.0 01 Jun 2021 M1 L1 MIT Yes Details →
7.6.1 07 May 2021 M1 L1 MIT Yes Details →
7.6.0 28 Apr 2021 M1 L1 MIT Yes Details →
7.5.0 21 Apr 2021 M1 L1 MIT Yes Details →
7.4.0 09 Apr 2021 M1 L1 MIT Yes Details →
7.3.3 02 Apr 2021 M1 L1 MIT Yes Details →
7.3.2 30 Mar 2021 M1 L1 — Yes Details →
7.3.1 26 Mar 2021 M1 L1 — Yes Details →
7.3.0 19 Mar 2021 M1 L1 — Yes Details →
7.2.0 03 Mar 2021 M1 L1 — Yes Details →
7.1.0 19 Feb 2021 M1 L1 — Yes Details →
7.0.0 10 Feb 2021 M1 L1 — Yes Details →
6.12.0 02 Feb 2021 M1 L1 — Yes Details →
6.11.0 28 Jan 2021 M1 L1 — Yes Details →
6.10.1 26 Jan 2021 M1 L1 — Yes Details →
6.10.0 15 Jan 2021 M1 L1 — Yes Details →
6.9.1 12 Jan 2021 M1 L1 — Yes Details →
6.9.0 28 Dec 2020 M1 L1 — Yes Details →
6.8.0 26 Dec 2020 M1 L1 — Yes Details →
6.7.0 22 Dec 2020 M1 L1 — Yes Details →
6.5.0 05 Dec 2020 M1 L1 — Yes Details →
6.4.0 23 Oct 2020 M1 L1 — Yes Details →
6.3.0 20 Oct 2020 M1 L1 — Yes Details →
6.2.0 15 Oct 2020 M1 L1 — Yes Details →
6.1.1 11 Oct 2020 M1 L1 — Yes Details →
6.1.0 08 Oct 2020 M1 L1 — Yes Details →

The newest 120 of 130 versions Vulert tracks. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2021 1
  • 2023 1
  • 2026 2

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 2 of the 4 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for mercurius

The 4 most severe of 4 vulnerabilities recorded for this package

Search all 4 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2021-43801: Denial of Service Vulnerability in Mercurius 7.5 high 8.11.2 13 Dec 2021
CVE-2025-64166: Mercurius Incorrect Content-Type Parsing Leading to CSRF Vulnerability 5.4 medium 16.4.0 05 Mar 2026
CVE-2023-22477: Denial of Service Vulnerability in mercurius 5.3 medium 11.5.0 09 Jan 2023
CVE-2026-30241: Mercurius WebSocket Subscription Query Depth Limit Bypass 2.7 low 16.8.0 06 Mar 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

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Questions

About mercurius

Is mercurius safe to use?

Vulert records 4 vulnerabilities for mercurius in npm: 0 critical, 1 high, 2 medium and 1 low. Every one of them has a published fix, so the practical answer is to run a supported release and keep it patched.

What is mercurius's Vulert package health score?

Vulert scores mercurius 75/100, 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 mercurius affected?

No. 16.12.0, the version you would install today, has no vulnerabilities on record against it. Earlier releases do — the version table above lists each release with what affects it.

How many vulnerabilities does mercurius have?

4 vulnerabilities are recorded for mercurius in the npm ecosystem: 0 critical, 1 high, 2 medium and 1 low. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new mercurius vulnerabilities disclosed?

2 vulnerabilities were recorded for mercurius in the last 12 months, and the oldest entry in this database dates to 13 Dec 2021. 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 mercurius 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 mercurius for upcoming vulnerabilities?

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