VDB
CVE-2026-33349
CVE-2026-33349
PUBLISHED
CVSS 5.900000095367432 MEDIUM
Entity Expansion Limits Bypassed When Set to Zero Due to JavaScript Falsy Evaluation in fast-xml-parser
EPSS 0.04% · 12.1th percentile
Risk Scores
CVSS v3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.04%
12.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| npm | fast-xml-parser | 4.0.0-beta.3, 4.0.0-beta.3, 4.0.0-beta.3 |
| naturalintelligence | fast-xml-parser | 4.0.0, 4.0.0, 4.0.0 |
| NaturalIntelligence | fast-xml-parser | >= 4.0.0-beta.3, < 5.5.7, *, >= 4.0.0-beta.3, < 5.5.7 |
Timeline
- Mar 19, 2026 CVE Published
- Mar 20, 2026 Security Advisory
- Mar 24, 2026 PoC Published
- Mar 25, 2026 EPSS Score
- Apr 8, 2026 CVE Updated
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
References
- https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-jp2q-39xq-3w4g url
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/239b64aa1fc5c5455ddebbbb54a187eb68c9fdb7 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-33349 advisory
- https://github.com/NaturalIntelligence/fast-xml-parser package
- https://www.ibm.com/support/pages/node/7274185 advisory
- https://www.ibm.com/support/pages/node/7274154 advisory
- https://www.ibm.com/support/pages/node/7274180 advisory
- https://www.ibm.com/support/pages/node/7274183 advisory
- https://www.ibm.com/support/pages/node/7273957 advisory
- https://www.ibm.com/support/pages/node/7274184 advisory
- https://www.ibm.com/support/pages/node/7274314 advisory
- https://www.ibm.com/support/pages/node/7274182 advisory
- https://www.ibm.com/support/pages/node/7274181 advisory
- https://www.ibm.com/support/pages/node/7273803 advisory
- https://www.ibm.com/support/pages/node/7272901 advisory