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Vulnerability Database · AlmaLinux · Package report

expat: vulnerability history, versions and safety

expat is a package in the AlmaLinux ecosystem. Vulert records 13 vulnerabilities for it across 12 affected ranges, from Mar 2022 to Sep 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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13 vulnerabilities recorded U13
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0 with no fix published

Every vulnerability has a patched version to move to.

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4 in the last 12 months

Most recent disclosure 28 Sep 2026.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all expat vulnerabilities

Vulert verdict on expat i

Updated on 23 Oct 2026

Every vulnerability Vulert records for this package has a fix, and the newest was recorded 28 Sep 2026. Apply the fixes listed below and you are clear.

Long-term outlook: usable, with an upgrade 13 vulnerabilities on record across 4 years, 4 in the last year.

What to do: Move the affected dependencies to the fixed versions listed below, then keep the package monitored so the next vulnerability reaches you. Fix it, then keep watch: Vulert alerts you when a new vulnerability affects the version you run. Monitor it with Vulert →

  • Vulnerabilities on record 13 over 4 years · 4 in the last year i
  • Latest disclosure 28 Sep 2026 i
  • Highest CVSS n/a i
  • With no published fix 0 i

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01 Versions

Which versions are affected

Vulert records these vulnerabilities by affected range rather than by individual release, so these are the ranges to check. Filter above to find the version you run.

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Affected range Vulnerabilities
up to 2.5.0-4.el8_10 (exclusive) 1
up to 2.5.0-2.el8_10.2 (exclusive) 1
up to 2.5.0-2.el8_10 (exclusive) 1
up to 2.5.0-1.el8_10 (exclusive) 1
up to 2.2.5-17.el8_10 (exclusive) 1
up to 2.2.5-16.el8_10 (exclusive) 1
up to 2.2.5-15.el8_10 (exclusive) 1
up to 2.2.5-11.el8_9.1 (exclusive) 1
up to 2.2.5-10.el8_7.1 (exclusive) 1
up to 2.2.5-8.el8_6.3 (exclusive) 1
up to 2.2.5-8.el8_6.2 (exclusive) 2
up to 2.2.5-8.el8 (exclusive) 1

02 Disclosure history

How often vulnerabilities are recorded

  • 2022 4
  • 2023 1
  • 2024 3
  • 2025 2
  • 2026 3

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 4 of the 13 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for expat

The 5 most severe of 13 vulnerabilities recorded for this package

Search all 13 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
Critical Denial of Service Vulnerability in Expat Package N/A unrated 2.5.0-2.el8_10 03 Jun 2026
Moderate Vulnerability in Expat Package: DoS via XML_ResumeParser N/A unrated 2.2.5-16.el8_10 13 Nov 2024
Moderate Security Vulnerability in Expat Package: Improper XML Entity Expansion Depth N/A unrated 2.2.5-17.el8_10 15 Apr 2025
Critical Memory Allocation Vulnerability in Expat XML Parsing Library N/A unrated 2.5.0-1.el8_10 19 Nov 2025
Moderate Security Update for Expat: Addressing Multiple Vulnerabilities N/A unrated 2.2.5-15.el8_10 24 Sep 2024

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 expat

Is expat safe to use?

Vulert records 13 vulnerabilities for expat in AlmaLinux: 0 critical, 0 high, 0 medium and 0 low, plus 13 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.

How many vulnerabilities does expat have?

13 vulnerabilities are recorded for expat in the AlmaLinux ecosystem: 0 critical, 0 high, 0 medium and 0 low, plus 13 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 expat vulnerabilities disclosed?

4 vulnerabilities were recorded for expat in the last 12 months, and the oldest entry in this database dates to 16 Mar 2022. 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 expat 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 expat for upcoming vulnerabilities?

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