# CVE-2026-120474: undici vulnerable to cross-user cache disclosure via same-origin redirect

Status: published. Published: 2026-11-06. Updated: 2026-11-06.

undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- undici / undici (undici): ≥ 7.0.0; < 7.30.2 (affected, semver); 7.30.2 (unaffected, semver); ≥ 8.0.0; < 8.12.4 (affected, semver); 8.12.4 (unaffected, semver). Source: CNA: openjs

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N; source: CNA: openjs

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-524, CWE-639

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/nodejs/undici/security/advisories/GHSA-7xg3-fphp-28hg (CNA: openjs)

- https://cna.openjsf.org/security-advisories.html (CNA: openjs)

## Provenance

- CNA: openjs: https://www.cve.org/CVERecord?id=CVE-2026-120474; retrieved 2026-11-06; source updated 2026-11-06

Revision: d8bf465fe62b91c34ccb8631eaffd6844b56817e2fa69579f9765c10bb786447

Canonical: https://y2.dev/cve/CVE-2026-120474

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