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CVE-2026-50021— pnpm: Integrity Check Bypass via Missing Lockfile Integrity Field

Quick assessment

Affected
pnpm pnpm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pnpm是pnpm团队开源的一个包管理器。 pnpm 10.34.0之前版本和11.0.0版本至11.4.0之前版本存在加密问题漏洞，该漏洞源于tarball提取工作器在lockfile解析中缺失完整性字段时跳过完整性验证，可能导致攻击者修改pnpm-lock.yaml并篡改包内容后安装被更改的包。

CVSS 6.8 · Medium EPSS 0.18% · P7

Affected Version Matrix 2

VendorProduct Version RangeStatus
pnpm pnpm < 10.34.0 affected
>= 11.0.0, < 11.4.0 affected
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I. Basic Information for CVE-2026-50021

Vulnerability Information
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Vulnerability Title
pnpm: Integrity Check Bypass via Missing Lockfile Integrity Field
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
完整性检查值验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
pnpm 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pnpm是pnpm团队开源的一个包管理器。 pnpm 10.34.0之前版本和11.0.0版本至11.4.0之前版本存在加密问题漏洞，该漏洞源于tarball提取工作器在lockfile解析中缺失完整性字段时跳过完整性验证，可能导致攻击者修改pnpm-lock.yaml并篡改包内容后安装被更改的包。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pnpm pnpm < 10.34.0 -

II. Public POCs for CVE-2026-50021

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III. Intelligence Information for CVE-2026-50021

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Vendor Advisories for CVE-2026-50021 (1)

Same Patch Batch · pnpm · 2026-06-25 · 13 CVEs total

CVE-2026-50016 8.8 HIGH pnpm: Transitive dependency alias path traversal allows project path override via symlink
CVE-2026-55698 8.8 HIGH pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfi
CVE-2026-55487 7.5 HIGH pnpm: manifest identity spoof satisfies allowBuilds and runs attacker lifecycle
CVE-2026-55697 7.5 HIGH pnpm: Repository-controlled configDependencies can select a pacquet native install engine
CVE-2026-50015 7.3 HIGH pnpm: Arbitrary File Write/Delete via Malicious Patch File (Path Traversal)
CVE-2026-55700 7.1 HIGH pnpm: stage download writes outside destination via manifest version traversal
CVE-2026-50573 6.8 MEDIUM pnpm: Unsafe default behavior breaks integrity check
CVE-2026-55180 6.5 MEDIUM pnpm: Repository config can expand victim environment secrets into registry requests befor
CVE-2026-55699 6.5 MEDIUM pnpm: reserved bin name deletes PNPM_HOME during global remove
CVE-2026-50014 6.4 MEDIUM pnpm: Git Fetch Argument Injection via Lockfile resolution.commit
CVE-2026-48995 pnpm: Tarball hash of GitHub git dependencies is not stored in lockfile
CVE-2026-50017 pnpm binds unscoped user-level npm auth credentials to a repository-selected registry

IV. Related Vulnerabilities

Same product: pnpm
Same vendor: pnpm
Same weakness: CWE-354

V. Comments for CVE-2026-50021

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