Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N R U H H H 8.8 .0016 5.9 —
AFFECTED Product Versions Fixed pnpm < 10.34.2 – —
TIMELINE Jun 16 Reserved by GitHub_M Jun 25 EXPLOIT PUBLISHED — CVE-2026-55487 (pnpm). Public exploit reference added. Jun 25 Published (CNA: GitHub_M)
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.
| Date | Event | Detail |
|---|---|---|
| June 16, 2026 | Reserved | Reserved by GitHub_M |
| June 25, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-55487 (pnpm). Public exploit reference added. |
| June 25, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| pnpm | pnpm | — | < 10.34.2 | — |
Authoritative record: CVE-2026-55487 at cve.org
Vendors: pnpm
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-55487 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.