CVE-2025-69263 - pnpm is a package manager. Versions 10.26.2 and below store HTTP tarball dependencies (and git-hosted tarballs

CVE-2025-69263 + pnpm is a package manager. Versions 10.26.2 and below store HTTP tarball dependencies (and git-hosted tarballs + High + 2026-01-07

One-sentence business risk

The vulnerable component sits in a commonly deployed application path and can create a material breach, outage, or compliance risk.

Research notes

  • Root cause: pnpm is a package manager. Versions 10.26.2 and below store HTTP tarball dependencies (and git-hosted tarballs) in the lockfile without integrity hashes.
  • Affected versions: Affected versions named by the upstream advisory and dependency metadata.
  • Fixed / safe versions: fixed in version 10.26.0…
  • Public exploit / PoC signal: the consulted NVD/GHSA/vendor sources describe the trigger class; treat it as reproducible until patched.
  • CVSS: 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Exact vulnerable code pattern

install using repository-controlled package-manager metadata without validation

Fixed / mitigated code pattern

upgrade the package manager, require frozen lockfiles, and review installer metadata in CI

Dependency or runtime update:

npm ls pnpm || true
npm install pnpm@latest --save-exact
npm audit --omit=dev

Step-by-step integration guide

  1. Inventory pnpm across source, lockfiles, SBOMs, container images, CI images, and deployment manifests.
  2. Upgrade to fixed in version 10.26.0. or apply the exact vendor patch referenced below.
  3. Replace the vulnerable supply-chain pattern with the fixed pattern and fail closed on malformed input.
  4. Add a regression test that exercises the advisory trigger and proves the request is rejected, bounded, or authorized.
  5. Deploy through canary, monitor security logs and resource metrics, then remove temporary edge blocks only after all runtimes are fixed.

Alternative mitigations

  • Disable the vulnerable feature path while the package/runtime update rolls out.
  • Add WAF or reverse-proxy rules for traversal tokens, prototype-polluting keys, oversized frames, shell metacharacters, or unauthenticated tool calls matching the trigger class.
  • Restrict internal egress, rotate exposed secrets, and revoke affected tokens/keys if the vulnerability can disclose config, logs, JWT secrets, proxy credentials, or PKI material.
  • For admin/API authorization issues, temporarily require elevated roles and explicit ownership checks at the gateway.

Detection signature

id: cve-2025-69263-pnpm-is-a-package-manager-versions-10-26-2-and-b
source: NVD
dependency_or_product: "pnpm"
affected: "Affected versions named by the upstream advisory and dependency metadata"
fixed: "fixed in version 10.26.0."
signals:
  - "supply-chain"
  - "../"
  - "__proto__"
  - "tools/call"
  - "wp_ajax_nopriv"
  - "pickle.loads"
  - "shell command construction"
action: "upgrade, add regression test, and verify deploy artifact"

Copy-paste skill

You are remediating CVE-2025-69263 (pnpm is a package manager. Versions 10.26.2 and below store HTTP tarball dependencies (and git-hosted tarballs) in this repository.

Find every affected dependency, runtime, image, service configuration, and reachable code path. Upgrade or patch to fixed in version 10.26.0.. Replace the vulnerable supply-chain pattern with a fail-closed implementation, add a regression test for the trigger shape, and update deployment/SBOM artifacts. If this repository does not control the affected runtime, create TRIAGE.md naming the owner, affected version, fixed version, and blocking decision.

Keywords, affected tech stack, and revenue tags

  • Keywords: CVE-2025-69263, supply-chain, pnpm, NVD.
  • Affected tech stack: javascript/npm.
  • Revenue tags: sellable_to_fintech, enterprise_blocker, high_priority_sla.

References