# CVE-2022-25236: Other in n/a > Attackers can insert namespace-separator characters into namespace URIs in libexpat, potentially causing parsing errors or unexpected behavior. - **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 16 Feb 2022 - **Updated:** 14 Oct 2026 - **Also known as:** ALPINE-CVE-2022-25236, AZL-8604, CLEANSTART-2026-AU70614, DEBIAN-CVE-2022-25236, GHSA-3c6c-gjpg-qq92, JLSEC-2025-53, SUSE-SU-2022:0842-1, SUSE-SU-2022:0844-1, SUSE-SU-2022:0844-2, SUSE-SU-2022:14934-1, openSUSE-SU-2022:0844-1, openSUSE-SU-2024:12622-1 ## What is CVE-2022-25236? CVE-2022-25236 is a critical vulnerability in Debian Debian Linux, published on 16 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs. Weakness: CWE-668 (Exposure of Resource to Wrong Sphere) ## Which versions are affected by CVE-2022-25236? It affects 5 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `expat` | SUSE:Enterprise Storage 6 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Enterprise Storage 7 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:HPE Helion OpenStack 8 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Micro 5.0 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Micro 5.1 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Micro 5.2 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Module for Basesystem 15 SP3 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 2.0.1-88.42.22.1 | | `expat` | SUSE:Linux Enterprise Real Time 15 SP2 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 2.0.1-88.42.22.1 | | `expat` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server 15 SP2-BCL | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Server for SAP Applications 15 SP2 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:Manager Proxy 4.1 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Manager Retail Branch Server 4.1 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:Manager Server 4.1 | All versions | 2.2.5-3.19.1 | | `expat` | SUSE:OpenStack Cloud 8 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:OpenStack Cloud 9 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:OpenStack Cloud Crowbar 8 | All versions | 2.1.0-21.22.1 | | `expat` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 2.1.0-21.22.1 | Products: Debian Debian Linux, Libexpat Project Libexpat, Oracle Http Server, Oracle Zfs Storage Appliance Kit, Siemens Sinema Remote Connect Server. ## How do I fix CVE-2022-25236? Upgrade to a fixed version. ## Is CVE-2022-25236 being exploited? There is no known exploitation of CVE-2022-25236 in the wild and no public exploit code. Public exploit code: - https://github.com/Satheesh575555/external_expat_AOSP10_r33_CVE-2022-25236 (github_poc): https://github.com/Satheesh575555/external_expat_AOSP10_r33_CVE-2022-25236 ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-25236 and fix it if it is affected. What it is: CVE-2022-25236 is a critical vulnerability in Debian Debian Linux, published on 16 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2022-25236 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-2022-25236/ (Markdown: https://insights.sbomify.com/CVE-2022-25236/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-25236 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-25236 - OSV: https://osv.dev/vulnerability/CVE-2022-25236 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-25236/ Summaries are generated and may contain mistakes; the official description above is the record.