# Libexpat vulnerabilities

Source: https://junglewise.ai/threats/technologies/libexpat-libexpat  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/libexpat-libexpat.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in Libexpat: 1 in the last 7 days and 4 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 from none in the four before.

## Counts

- Last 7 days: 1
- Last 30 days: 4
- Last 90 days: 4
- All time: 4 (0 critical, 0 exploited in the wild)

## About Libexpat

XML parser library for parsing and generating XML documents.

## Latest Libexpat vulnerabilities

- [CVE-2026-124317: libexpat out-of-bounds read in unknown encoding handlers](https://junglewise.ai/threats/cve-2026-124317-libexpat-through-2-10-0-contains-an-out-of-bounds-read) (medium, CVSS 4.8, published 7 Nov 2026)
- [CVE-2026-117610: libexpat NULL pointer dereference in external entity parsing](https://junglewise.ai/threats/cve-2026-117610-libexpat-through-2-9-0-contains-a-null-pointer-dereference) (medium, CVSS 5.9, published 28 Oct 2026)
- [CVE-2026-115506: libexpat denial of service in billion laughs protection](https://junglewise.ai/threats/cve-2026-115506-libexpat-through-2-9-0-contains-a-denial-of-service) (high, CVSS 7.5, published 22 Oct 2026)
- [CVE-2026-113351: libexpat denial of service via XML_ParserReset byte count inconsistency](https://junglewise.ai/threats/cve-2026-113351-libexpat-2-7-2-through-2-9-0-contains-a-denial-of-service) (medium, CVSS 5.9, published 20 Oct 2026)

## Most severe Libexpat vulnerabilities

- [CVE-2026-115506: libexpat denial of service in billion laughs protection](https://junglewise.ai/threats/cve-2026-115506-libexpat-through-2-9-0-contains-a-denial-of-service) (high, CVSS 7.5, published 22 Oct 2026)
- [CVE-2026-117610: libexpat NULL pointer dereference in external entity parsing](https://junglewise.ai/threats/cve-2026-117610-libexpat-through-2-9-0-contains-a-null-pointer-dereference) (medium, CVSS 5.9, published 28 Oct 2026)
- [CVE-2026-113351: libexpat denial of service via XML_ParserReset byte count inconsistency](https://junglewise.ai/threats/cve-2026-113351-libexpat-2-7-2-through-2-9-0-contains-a-denial-of-service) (medium, CVSS 5.9, published 20 Oct 2026)
- [CVE-2026-124317: libexpat out-of-bounds read in unknown encoding handlers](https://junglewise.ai/threats/cve-2026-124317-libexpat-through-2-10-0-contains-an-out-of-bounds-read) (medium, CVSS 4.8, published 7 Nov 2026)

## Vulnerabilities per week

4 vulnerabilities in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 2 | 0 | 0 |
| 26 Oct 2026 | 1 | 0 | 0 |
| 2 Nov 2026 | 1 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Libexpat vulnerabilities", https://junglewise.ai/threats/technologies/libexpat-libexpat, 9 November 2026.