Vendor
Libexpat vulnerabilities
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Junglewise Threat Intelligence has tracked 8 vulnerabilities in Libexpat: 1 in the last 7 days and 8 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-124317, was published on 7 November 2026. 4 vulnerabilities in the last four weeks, up 100% on the four before (2). 1 technology has a page of its own.
- Last 7 days
- 1
- Last 90 days
- 8
- Critical, all time
- 0
- Exploited in the wild
- 0
About Libexpat
XML parser library for parsing and processing XML documents in C applications.
Libexpat technologies
Latest Libexpat vulnerabilities
- CVE-2026-124317: libexpat out-of-bounds read in unknown encoding handlersmediumCVSS 4.8
- CVE-2026-117610: libexpat NULL pointer dereference in external entity parsingmediumCVSS 5.9
- CVE-2026-115506: libexpat denial of service in billion laughs protectionhighCVSS 7.5
- CVE-2026-113351: libexpat denial of service via XML_ParserReset byte count inconsistencymediumCVSS 5.9
- CVE-2026-102633: libexpat integer overflow in expat_realloc on 32-bit platformsmediumCVSS 5.9
- CVE-2026-93990: Expat UTF-16 surrogate validation bypasshighCVSS 7.5EPSS 0.4%
- CVE-2026-76957: libexpat use-after-free in custom encoding callbacksmediumCVSS 4.9EPSS 0.1%
- CVE-2026-76956: libexpat hash flooding denial of service via mishandled entropy generationmediumCVSS 5.9EPSS 0.4%
Most severe Libexpat vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-93990: Expat UTF-16 surrogate validation bypasshighCVSS 7.5EPSS 0.4%
- CVE-2026-115506: libexpat denial of service in billion laughs protectionhighCVSS 7.5
- CVE-2026-76956: libexpat hash flooding denial of service via mishandled entropy generationmediumCVSS 5.9EPSS 0.4%
- CVE-2026-117610: libexpat NULL pointer dereference in external entity parsingmediumCVSS 5.9
- CVE-2026-113351: libexpat denial of service via XML_ParserReset byte count inconsistencymediumCVSS 5.9
- CVE-2026-102633: libexpat integer overflow in expat_realloc on 32-bit platformsmediumCVSS 5.9
- CVE-2026-76957: libexpat use-after-free in custom encoding callbacksmediumCVSS 4.9EPSS 0.1%
- CVE-2026-124317: libexpat out-of-bounds read in unknown encoding handlersmediumCVSS 4.8
Vulnerabilities per week
4 vulnerabilities in the last four weeks, up 100% on the four before (2). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 2 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 1 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 1 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 2 | 0 | |
| 26 Oct 2026 | 1 | 0 | |
| 2 Nov 2026 | 1 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Libexpat vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/libexpat)<a href="https://junglewise.ai/threats/vendors/libexpat"><img src="https://junglewise.ai/threats/vendors/libexpat/badge.svg" alt="Libexpat vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/libexpat.json, and this page as text at https://junglewise.ai/threats/vendors/libexpat.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Libexpat vulnerabilities", https://junglewise.ai/threats/vendors/libexpat, 9 November 2026.