CVE-2026-50021

HIGH
MEDIUM Priority: 0.01 BB Relevance: 66/100
Published: 2026-06-25 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: None

Description

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's tarball extraction worker skips integrity verification when the integrity field is absent from the lockfile resolution. If an attacker can both modify pnpm-lock.yaml to remove the integrity: field and cause the referenced registry URL to serve altered package content, pnpm install --frozen-lockfile can install the altered package without an integrity error. npm's npm ci enforces integrity by default; pnpm's behavior of silently skipping verification is a pnpm-specific fail-open gap. This vulnerability is fixed in 10.34.0 and 11.4.0.

Affected Software (3)

VendorProductVersion
pnpm pnpm < 10.34.0
pnpm pnpm >= 11.0.0, < 11.4.0
pnpm pnpm < 10.34.0

References & Advisories (1)

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001810
Percentile 7.7%
Date 2026-11-05

EPSS Trend

2026-11-05
0.00181
2026-11-04
0.00181
2026-11-03
0.00181

Intelligence Sources

mitre ref →
nvd ref →