Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not "cryptographically secure." (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.
CVE-2025-46653
This low-severity CVE scores 3.1 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 84% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.1
- EG Score
- 3.1(medium)
- EPSS
- 28.1%
- KEV
- Not listed
Published
April 26, 2025
Last Modified
May 13, 2026
References (4)
- cve@mitrehttps://github.com/node-formidable/formidable/blob/d0fbec13edc8add54a1afb9ce1a8d3db803f8d47/CHANGELOG.md?plain=1#L10
- cve@mitrehttps://github.com/node-formidable/formidable/commit/022c2c5577dfe14d2947f10909d81b03b6070bf5
- cve@mitrehttps://github.com/zast-ai/vulnerability-reports/blob/main/formidable/file_upload/report.md
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/zast-ai/vulnerability-reports/blob/main/formidable/file_upload/report.md
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| formidable | — | 2.1.3 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 49× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 111 total refreshes for this CVE.
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-10 13:41 UTCOSV refresh
- 2026-07-09 19:09 UTCEPSS rescore
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- 2026-06-03 09:10 UTCOSV refresh
- 2026-06-02 20:12 UTCEPSS rescore
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- 2026-05-23 00:09 UTCEG score recompute
- 2026-05-22 21:16 UTCEPSS rescore
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- 2026-05-21 22:43 UTCEPSS rescore
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- 2026-05-21 14:19 UTCEG score recompute
Frequently asked(5)
What is CVE-2025-46653?
When was CVE-2025-46653 disclosed?
Is CVE-2025-46653 actively exploited?
What is the CVSS score of CVE-2025-46653?
How do I remediate CVE-2025-46653?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-46653
Is Your Infrastructure Affected by CVE-2025-46653?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.