CVE-2026-55487: Pnpm

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, the generic peer-suffix normalizer also stripped parenthesized text from git, URL, tarball, file, and other opaque locators. Approval for one source string could therefore authorize a different attacker-controlled source whose locator normalized to the same value. This vulnerability is fixed in 10.34.2 and 11.5.3.

Affected products

• Pnpm Pnpm: before 10.34.2 (fixed in 10.34.2); from 11.0.0, before 11.5.3 (fixed in 11.5.3)

Published 2026-06-25. Last modified 2026-06-29.