Buttercup v2.20.3 allows attackers to obtain the hash of the master password for the…
Priority MEDIUM 63CWE-916Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Buttercup v2.20.3 allows attackers to obtain the hash of the master password for the password manager via accessing the file /vaults.json/
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00475 41st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed buttercup (npm): 7.4.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | buttercup (npm) | 2.20.3 to before 7.4.0 | 7.4.0 | Patch available | GHSA-7cwq-p8cr-h9qg |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- buttercup (npm) Vendor— Affected 2.20.3 to before 7.4.0 Fixed in 7.4.0 Patch available GHSA-7cwq-p8cr-h9qg
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:perrymitchell:buttercup:2.20.3:*:*:*:*:*:*:* | 2.20.3 | Vulnerable | Perrymitchell |
- cpe:2.3:a:perrymitchell:buttercup:2.20.3:*:*:*:*:*:*:* Versions 2.20.3 Vulnerable ·Perrymitchell
Remediation
- Fix · GHSA-7cwq-p8cr-h9qg buttercup (npm) Fixed in 7.4.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-41646
- 2026-10-03 Alias added: GHSA-7cwq-p8cr-h9qg
References
Sources
- CVE-2023-41646 · CVE Program
- CVE-2023-41646 · NVD
- FIRST EPSS
- GHSA-7cwq-p8cr-h9qg · GitHub Advisory Database · CC BY 4.0
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