CVE-2022-22823 build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Critical 9.8
Published
Updated
Check this codebase for CVE-2022-22823 and fix it if it is affected.
What it is: CVE-2022-22823 is a critical vulnerability in Debian Debian Linux, published on 8 Jan 2022.
Exploitation: There is no known exploitation of CVE-2022-22823 in the wild and no public exploit code.
Affected product: Debian Debian Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2022-22823/ (Markdown: https://insights.sbomify.com/CVE-2022-22823/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2022-22823?
CVE-2022-22823 is a critical vulnerability in Debian Debian Linux, published on 8 Jan 2022.
Official description
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Weakness: CWE-190
Which versions are affected by CVE-2022-22823?
It affects 4 products.
Products include Debian Debian Linux, Libexpat Project Libexpat, Siemens Sinema Remote Connect Server, Tenable Nessus.
How do I fix CVE-2022-22823?
Upgrade to a fixed version.
Is CVE-2022-22823 being exploited?
There is no known exploitation of CVE-2022-22823 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2022-22823, AZL-7157, CLEANSTART-2026-KV41078, DEBIAN-CVE-2022-22823, GHSA-g654-6pp3-8m8w, JLSEC-2025-45 and 1 more.