Description
The package integrity validation in yarn < 1.19.0 contains a TOCTOU vulnerability where the hash is computed before writing a package to cache. It's not computed again when reading from the cache. This may lead to a cache pollution attack.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | yarn | Fixed in 1.19.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-yarnpkg | 1.19.1-1 | — |
| Debian 13 | node-yarnpkg | 1.19.1-1 | — |
| Debian 12 | node-yarnpkg | 1.19.1-1 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | yarn | 1.19.0-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | yarn | < 1.19.0 | 1.19.0 | GHSA-hjxc-462x-x77j |