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Vulnerability Database · PyPI · Package report

matrix-sydent: vulnerability history, versions and safety

matrix-sydent is a package in the PyPI ecosystem. Vulert records 14 vulnerabilities for it across 21 releases, from Apr 2021 to Jul 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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14 vulnerabilities recorded C1 H2 M4 U7
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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 09 Jul 2026.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all matrix-sydent vulnerabilities

Vulert verdict on matrix-sydent 2.6.1 i

Updated on 23 Oct 2026

Action needed: 2.6.1 has 3 known vulnerabilities, but every one of them has a fix. Upgrade to the version listed below and you are clear.

Package health score 53/100
  • Security Some issues to review
  • Maintenance Maintaining
  • Popularity Little adoption
  • Community Quiet

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 2.6.1 — affected i
  • Vulnerabilities on record 14 over 5 years · 2 in the last year i
  • Latest disclosure 09 Jul 2026 i
  • Highest CVSS 9.3 i
  • With no published fix 0 i
  • Stars 317 i
  • OpenSSF scorecard 4/10 i
  • Last release 35 months ago i
  • Licence Apache-2.0 i

Version list, release dates, licence and dependants published by PyPI, 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 matrix-sydent, 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
2.6.1 20 Nov 2023 U3 Apache-2.0 Yes Details →
2.6.0 20 Nov 2023 U3 Apache-2.0 Yes Details →
2.5.6 31 Jul 2023 U3 Apache-2.0 Yes Details →
2.5.5 22 Jun 2023 C1 U1 Apache-2.0 Yes Details →
2.5.4 22 Jun 2023 C1 U1 Apache-2.0 Yes Details →
2.5.3 02 Mar 2023 C1 U1 Apache-2.0 Yes Details →
2.5.2 04 Apr 2022 C1 U1 Apache-2.0 Yes Details →
2.5.1 17 Nov 2021 C1 U1 — Yes Details →
2.5.0 03 Nov 2021 C1 U1 — Yes Details →
2.4.6 08 Oct 2021 C1 U1 — Yes Details →
2.4.5 08 Oct 2021 C1 U1 — Yes Details →
2.4.4 08 Oct 2021 C1 U1 — Yes Details →
2.4.3 14 Sep 2021 C1 U1 — Yes Details →
2.4.2 13 Sep 2021 C1 U1 — Yes Details →
2.4.1 10 Sep 2021 C1 U1 — Yes Details →
2.4.0 09 Sep 2021 C1 U1 — Yes Details →
2.3.0 15 Apr 2021 C1 U1 — Yes Details →
2.2.0 11 Sep 2020 C1 H1 M3 U5 — Yes Details →
2.1.0 10 Sep 2020 C1 H1 M3 U5 — Yes Details →
2.0.1 20 May 2020 C1 H1 M3 U5 — Yes Details →
2.0.0 25 Feb 2020 C1 H1 M3 U5 — Yes Details →

All 21 versions Vulert tracks for this package. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2021 8
  • 2022 2
  • 2023 2
  • 2026 2

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 2 of the 14 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for matrix-sydent

The 5 most severe of 14 vulnerabilities recorded for this package

Search all 14 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2023-38686: Sydent does not verify email server certificates 9.3 critical 2.5.6 31 Jul 2023
CVE-2021-29431: SSRF in Sydent due to missing validation of hostnames 7.7 medium 2.3.0 19 Apr 2021
CVE-2019-11842: Cryptographically Weak PRNG in matrix-sydent and matrix-synapse 7.5 high 1.0.3 24 May 2022
CVE-2021-29430: Sydent vulnerable to denial of service attack via memory exhaustion 7.5 high 2.3.0 19 Apr 2021
CVE-2019-11842: matrix-sydent Cryptographically Weak PRNG Vulnerability 7.5 high 1.0.3 09 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

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Questions

About matrix-sydent

Is matrix-sydent safe to use?

Vulert records 14 vulnerabilities for matrix-sydent in PyPI: 1 critical, 2 high, 4 medium and 0 low, plus 7 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 matrix-sydent's Vulert package health score?

Vulert scores matrix-sydent 53/100, which reads as usable, but worth attention. 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 matrix-sydent affected?

Yes. 2.6.1, the version you would install today, has 3 known vulnerabilities, and every one of them has a published fix. Upgrade to the version listed for each.

Which version of matrix-sydent should I use?

2.6.1 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 matrix-sydent have?

14 vulnerabilities are recorded for matrix-sydent in the PyPI ecosystem: 1 critical, 2 high, 4 medium and 0 low, plus 7 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 matrix-sydent vulnerabilities disclosed?

2 vulnerabilities were recorded for matrix-sydent in the last 12 months, and the oldest entry in this database dates to 15 Apr 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 matrix-sydent 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 matrix-sydent for upcoming vulnerabilities?

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