# OPENSUSE-SU-2026:22177-1: expat security update

OPENSUSE-SU-2026:22177-1, released November 7, 2026, fixes 9 CVEs in expat (version 2.8.5-160000.1.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-22177-1
- Platform: Linux
- Released: Nov 7, 2026
- Priority: High (Closes CVE-2026-93990, high severity)
- CVEs: 9, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:22177-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [expat](https://patchblox.com/security/data/product/linux/expat.md) | opensuse-leap 16.0 | 2.8.5-160000.1.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-93990](https://patchblox.com/security/data/cve/CVE-2026-93990.md) | High | Expat through 2.8.4 Malformed UTF-16 Acceptance via Unchecked Surrogate | 7.5 | 0.0040 |  |
| [CVE-2026-102633](https://patchblox.com/security/data/cve/CVE-2026-102633.md) | High | libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc | 8.2 | 0.0037 |  |
| [CVE-2026-77214](https://patchblox.com/security/data/cve/CVE-2026-77214.md) | High | libexpat Heap Buffer Over-read in xmlparse.c via XML_ParseBuffer | 8.2 | 0.0032 |  |
| [CVE-2026-32777](https://patchblox.com/security/data/cve/CVE-2026-32777.md) | Routine | libexpat before 2.7.5 allows an infinite loop while parsing DTD content. | 5.5 | 0.0023 |  |
| [CVE-2026-32778](https://patchblox.com/security/data/cve/CVE-2026-32778.md) | Routine | libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition. | 5.5 | 0.0018 |  |
| [CVE-2026-32776](https://patchblox.com/security/data/cve/CVE-2026-32776.md) | Routine | libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content. | 5.5 | 0.0017 |  |
| [CVE-2026-56403](https://patchblox.com/security/data/cve/CVE-2026-56403.md) | Routine | libexpat before 2.8.2 has an integer overflow in storeAtts. | 6.9 | 0.0017 |  |
| [CVE-2026-56404](https://patchblox.com/security/data/cve/CVE-2026-56404.md) | Routine | libexpat before 2.8.2 has an integer overflow in addBinding. | 6.9 | 0.0013 |  |
| [CVE-2026-56405](https://patchblox.com/security/data/cve/CVE-2026-56405.md) | Routine | libexpat before 2.8.2 has an integer overflow in getAttributeId. | 6.9 | 0.0013 |  |

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Data as of 2026-11-10T13:56:55Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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