npm/piscina CVE-2026-55388: high 8.1, EPSS 0.45%
piscina: Prototype Pollution Gadget → RCE via inherited options.filename
Action: Upgrade piscina to 4.9.3 or later.
npm i piscina@5.2.0npm i piscina@4.9.3npm i piscina@6.0.0-rc.2Affected
| introduced | fixed | last affected |
|---|---|---|
| 5.0.0-alpha.0 | 5.2.0 | - |
| 0 | 4.9.3 | - |
| 6.0.0-rc.1 | 6.0.0-rc.2 | - |
Fixed versions
| 5.2.0 | 4.9.3 | 6.0.0-rc.2 |
Sources
- osv: GHSA-x9g3-xrwr-cwfg
- https://github.com/piscinajs/piscina/security/advisories/GHSA-x9g3-xrwr-cwfg
- https://github.com/piscinajs/piscina
CVE-2026-55388 · published · modified · JSON