Denial of service (DoS) in jszip
Priority LOW 30CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
This affects the package jszip before 3.7.0. Crafting a new zip file with filenames set to Object prototype values (e.g __proto__, toString, etc) results in a returned object with a modified prototype instance.
Why it matters now
EPSS 0.03441 89th percentileScored 2026-11-07
Fix Partial jszip: 3.7.0jszip (npm): 3.7.0, 2.7.0Red Hat: 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | jszip | before 3.7.0 | 3.7.0 | Patch available | CNA |
| — | jszip (npm) | 3.0.0 to before 3.7.0 | 3.7.0 | Patch available | GHSA-jg8v-48h5-wgxg |
| — | jszip (npm) | before 2.7.0 | 2.7.0 | Patch available | GHSA-jg8v-48h5-wgxg |
- jszip Vendor— Affected before 3.7.0 Fixed in 3.7.0 Patch available CNA
- jszip (npm) Vendor— Affected 3.0.0 to before 3.7.0 Fixed in 3.7.0 Patch available GHSA-jg8v-48h5-wgxg
- jszip (npm) Vendor— Affected before 2.7.0 Fixed in 2.7.0 Patch available GHSA-jg8v-48h5-wgxg
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jszip_project:jszip:*:*:*:*:*:node.js:*:* | before 3.7.0 | Vulnerable | Jszip Project |
- cpe:2.3:a:jszip_project:jszip:*:*:*:*:*:node.js:*:* Versions before 3.7.0 Vulnerable ·Jszip Project
Remediation
- Fix · CNA jszip Fixed in 3.7.0
- Fix · GHSA-jg8v-48h5-wgxg jszip (npm) Fixed in 3.7.0 Advisory →
- Fix · GHSA-jg8v-48h5-wgxg jszip (npm) Fixed in 2.7.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Migration Toolkit for Containers | Affected | No fix planned: Will not fix |
| Red Hat Quay 3 | Affected | No fix planned: Will not fix |
Not affected: 1 product
- Red Hat Fuse 7
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23413
- 2026-10-03 Alias added: GHSA-jg8v-48h5-wgxg
References
More Jszip Project Jszip vulnerabilities
- TI-2022-23902 loadAsync in JSZip before 3.8.0 allows Directory Traversal via a crafted ZIP archive. CVSS 3.1HIGH 7.3
Sources
- CVE-2021-23413 · CVE Program
- CVE-2021-23413 · NVD
- FIRST EPSS
- GHSA-jg8v-48h5-wgxg · GitHub Advisory Database · CC BY 4.0
- CVE-2021-23413 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences