CVE-2026-33036
1 advisory.
npm/fast-xml-parser CVE-2026-33036: high 7.5
fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)
Action: Upgrade fast-xml-parser to 4.5.5 or later.
npm i fast-xml-parser@5.5.6npm i fast-xml-parser@4.5.5Affected
| introduced | fixed | last affected |
|---|---|---|
| 5.0.0 | 5.5.6 | - |
| 4.0.0-beta.3 | 4.5.5 | - |
Fixed versions
| 5.5.6 | 4.5.5 |
Sources
- osv: GHSA-8gc5-j5rx-235r
- https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-8gc5-j5rx-235r
- https://nvd.nist.gov/vuln/detail/CVE-2026-33036
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/bd26122c838e6a55e7d7ac49b4ccc01a49999a01
- https://github.com/NaturalIntelligence/fast-xml-parser
- https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v4.5.5
- https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.5.6
CVE-2026-33036 · published · modified · JSON