CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LCVE-2021-23413
Medium (5.3) in jszip project jszip. EPSS 3.4% chance of exploitation in the next 30 days. Fixed in jszip 2.7.0, 3.7.0.
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.
Severity
- EPSS
- 3.4% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jszip_project:jszip
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-jg8v-48h5-wgxg | npm | jszip | >=3.0.0 <3.7.0 | 3.7.0 |
| GHSA-jg8v-48h5-wgxg | npm | jszip | <2.7.0 | 2.7.0 |