High severity7.5NVD Advisory· Published Jun 25, 2026· Updated Jun 29, 2026
CVE-2026-55487
CVE-2026-55487
Description
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 packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pnpmnpm | < 10.34.2 | 10.34.2 |
pnpmnpm | >= 11.0.0, < 11.5.3 | 11.5.3 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57rnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-5wx6-mg75-v57rghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-55487ghsaADVISORY
- github.com/pnpm/pnpm/commit/bf1b731ee6c0ea98709e671ff0f46bf654480ab8ghsaWEB
- github.com/pnpm/pnpm/releases/tag/v10.34.2ghsaWEB
- github.com/pnpm/pnpm/releases/tag/v11.5.3ghsaWEB
News mentions
1- Pnpm: Thirteen Vulnerabilities Disclosed Together, Posing Risks of ACE and Supply Chain CompromiseVypr Intelligence · Jun 25, 2026