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 N H L 7.1 .0035 28.4 —
AFFECTED Product Versions Fixed pnpm >= 11.3.0, < 11.5.3 – —
TIMELINE Jun 17 Reserved by GitHub_M Jun 25 EXPLOIT PUBLISHED — CVE-2026-55700 (pnpm). Public exploit reference added. Jun 25 Published (CNA: GitHub_M)
pnpm is a package manager. From 11.3.0 until 11.5.3, `pnpm stage download` derived a local filename from registry-controlled package name and version fields. A crafted manifest could escape the selected download directory and overwrite another reachable file. The merged fix validates both fields, derives one safe filename, and verifies the final destination before writing. This vulnerability is fixed in 11.5.3.
| Date | Event | Detail |
|---|---|---|
| June 17, 2026 | Reserved | Reserved by GitHub_M |
| June 25, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-55700 (pnpm). Public exploit reference added. |
| June 25, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| pnpm | pnpm | — | >= 11.3.0, < 11.5.3 | — |
Authoritative record: CVE-2026-55700 at cve.org
Vendors: pnpm
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-55700 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.