CVE-2023-26920
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
Description
fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
Predictions
Exploit likelihood
30%
Patch ETA
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Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | undetermined | |
| debian | forky | undetermined | |
| debian | sid | undetermined | |
| debian | trixie | undetermined | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| npm | fast-xml-parser | <4.1.2 | 4.1.2 |
References
- https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-x3cc-x39p-42qx
- https://nvd.nist.gov/vuln/detail/CVE-2023-26920
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804
- https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7
- https://github.com/NaturalIntelligence/fast-xml-parser
- https://github.com/advisories/GHSA-793h-6f7r-6qvm
- https://security-tracker.debian.org/tracker/CVE-2023-26920
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.