CVE-2026-26278
1 advisory.
npm/fast-xml-parser CVE-2026-26278: high 7.5, EPSS 1.08%
fast-xml-parser affected by DoS through entity expansion in DOCTYPE (no expansion limit)
Action: Upgrade fast-xml-parser to 4.5.4 or later.
npm i fast-xml-parser@4.5.4npm i fast-xml-parser@5.3.6Affected
| introduced | fixed | last affected |
|---|---|---|
| 4.1.3 | 4.5.4 | - |
| 5.0.0 | 5.3.6 | - |
Fixed versions
| 4.5.4 | 5.3.6 |
Sources
- osv: GHSA-jmr7-xgp7-cmfj
- https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-jmr7-xgp7-cmfj
- https://nvd.nist.gov/vuln/detail/CVE-2026-26278
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/910dae5be2de2955e968558fadf6e8f74f117a77
- https://github.com/NaturalIntelligence/fast-xml-parser
- https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.6
CVE-2026-26278 · published · modified · JSON