CVE-2026-120474
undici vulnerable to cross-user cache disclosure via same-origin redirect
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
undici vulnerable to cross-user cache disclosure via same-origin redirect
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.
- Record
CVE-2026-120474- 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 - Weakness
- CWE-524, CWE-639
- Updated
- 2026-11-06
EUVDEUVD-2026-118178
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.
- Record
EUVD-2026-118178- 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 - Updated
- 2026-11-06
NVD
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.
- Record
CVE-2026-120474- 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 - Weakness
- CWE-524, CWE-639
- Updated
- 2026-11-06
OSV
undici vulnerable to cross-user cache disclosure via same-origin redirect
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.
- Record
CVE-2026-120474- 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 - Weakness
- CWE-524, CWE-639
- Updated
- 2026-11-07
OSVDEBIAN-CVE-2026-120474
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.
- Record
DEBIAN-CVE-2026-120474- 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 - Updated
- 2026-11-07
OSVUBUNTU-CVE-2026-120474
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.
- Record
UBUNTU-CVE-2026-120474- 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 - Updated
- 2026-11-07
OSVCLSA-2026-1794048687 No score
TuxCare security update for undici (2 CVEs)
TuxCare rebuilt undici to address 2 CVEs. Fixed in 7.29.1-tuxcare.3.
- Record
CLSA-2026-1794048687- Updated
- 2026-11-07
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
undiciTuxCare:npm From an advisory covering 2 CVEs |
7.29.1-tuxcare.0 up to 7.29.1-tuxcare.3, plus listed versions 7.29.17.29.1-tuxcare.17.29.1-tuxcare.2 |
7.29.1-tuxcare.3 |
node-undiciDebian:12 |
All versions, plus listed versions 5.15.0+dfsg1+~cs20.10.9.3-15.15.0+dfsg1+~cs20.10.9.3-1+deb12u15.15.0+dfsg1+~cs20.10.9.3-1+deb12u25.15.0+dfsg1+~cs20.10.9.3-1+deb12u35.15.0+dfsg1+~cs20.10.9.3-1+deb12u4 Show 38 moreShow less5.19.1+dfsg1+~cs20.10.9.5-15.19.1+dfsg1+~cs20.10.9.5-25.22.1+dfsg1+~cs20.10.10.2-15.26.3+dfsg1+~cs23.10.12-15.26.3+dfsg1+~cs23.10.12-25.26.3+dfsg1+~cs23.10.12-35.28.0+dfsg1+~cs23.11.12.3-15.28.0+dfsg1+~cs23.11.12.3-25.28.2+dfsg1+~cs23.11.12.3-15.28.2+dfsg1+~cs23.11.12.3-25.28.2+dfsg1+~cs23.11.12.3-35.28.2+dfsg1+~cs23.11.12.3-45.28.2+dfsg1+~cs23.11.12.3-55.28.2+dfsg1+~cs23.11.12.3-65.28.4+dfsg1+~cs23.12.11-15.28.4+dfsg1+~cs23.12.11-27.1.0+dfsg1+~cs24.12.10-17.15.0+dfsg+~cs3.2.0-17.15.0+dfsg+~cs3.2.0-37.16.0+dfsg+~cs3.2.0-17.16.0+dfsg+~cs3.2.0-27.18.2+dfsg+~cs3.2.0-17.2.3+dfsg1+~cs24.12.11-17.2.3+dfsg1+~cs24.12.11-27.24.5+dfsg+~cs3.2.0-17.24.6+dfsg+~cs3.2.0-17.24.6+dfsg+~cs3.2.0-27.24.6+dfsg+~cs3.2.0-37.3.0+dfsg1+~cs24.12.11-17.3.0+dfsg1+~cs24.12.11-28.10.2+dfsg+~cs3.2.2-18.12.1+dfsg+~cs3.2.3-18.12.2+dfsg+~cs3.2.3-18.12.2+dfsg+~cs3.2.3-28.5.0+dfsg+~cs3.2.0-18.5.0+dfsg+~cs3.2.0-28.5.0+dfsg+~cs3.2.0-38.9.0+dfsg+~cs3.2.0-1 |
None known |
node-undiciDebian:13 |
All versions, plus listed versions 7.15.0+dfsg+~cs3.2.0-17.15.0+dfsg+~cs3.2.0-37.16.0+dfsg+~cs3.2.0-17.16.0+dfsg+~cs3.2.0-27.18.2+dfsg+~cs3.2.0-1 Show 14 moreShow less7.24.5+dfsg+~cs3.2.0-17.24.6+dfsg+~cs3.2.0-17.24.6+dfsg+~cs3.2.0-27.24.6+dfsg+~cs3.2.0-37.3.0+dfsg1+~cs24.12.11-17.3.0+dfsg1+~cs24.12.11-28.10.2+dfsg+~cs3.2.2-18.12.1+dfsg+~cs3.2.3-18.12.2+dfsg+~cs3.2.3-18.12.2+dfsg+~cs3.2.3-28.5.0+dfsg+~cs3.2.0-18.5.0+dfsg+~cs3.2.0-28.5.0+dfsg+~cs3.2.0-38.9.0+dfsg+~cs3.2.0-1 |
None known |
node-undiciDebian:14 |
All versions, plus listed versions 7.15.0+dfsg+~cs3.2.0-17.15.0+dfsg+~cs3.2.0-37.16.0+dfsg+~cs3.2.0-17.16.0+dfsg+~cs3.2.0-27.18.2+dfsg+~cs3.2.0-1 Show 14 moreShow less7.24.5+dfsg+~cs3.2.0-17.24.6+dfsg+~cs3.2.0-17.24.6+dfsg+~cs3.2.0-27.24.6+dfsg+~cs3.2.0-37.3.0+dfsg1+~cs24.12.11-17.3.0+dfsg1+~cs24.12.11-28.10.2+dfsg+~cs3.2.2-18.12.1+dfsg+~cs3.2.3-18.12.2+dfsg+~cs3.2.3-18.12.2+dfsg+~cs3.2.3-28.5.0+dfsg+~cs3.2.0-18.5.0+dfsg+~cs3.2.0-28.5.0+dfsg+~cs3.2.0-38.9.0+dfsg+~cs3.2.0-1 |
None known |
node-undiciUbuntu:24.04:LTS |
All versions, plus listed versions 5.22.1+dfsg1+~cs20.10.10.2-1ubuntu15.26.3+dfsg1+~cs23.10.12-2 |
None known |
node-undiciUbuntu:26.10 |
All versions, plus listed versions 7.18.2+dfsg+~cs3.2.0-1build17.24.6+dfsg+~cs3.2.0-38.5.0+dfsg+~cs3.2.0-28.5.0+dfsg+~cs3.2.0-38.9.0+dfsg+~cs3.2.0-1 |
None known |
node-undiciUbuntu:26.04:LTS |
All versions, plus listed versions 7.3.0+dfsg1+~cs24.12.11-27.16.0+dfsg+~cs3.2.0-27.18.2+dfsg+~cs3.2.0-17.18.2+dfsg+~cs3.2.0-1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| affected, aliases | OSV | |
| aliases, references | OSV | |
| affected, aliases, published, references | NVD, OSV | |
| aliases, published | EUVD | |
| first indexed | CVE List |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-120474 is a medium vulnerability (CVSS 6.5) in Undici, published November 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. No source names a fixed version.
References
github.com/nodejs/undici/security/advisories/GHSA-7xg3-fphp-28hg
cna.openjsf.org/security-advisories.html
nvd.nist.gov/vuln/detail/CVE-2026-120474
security-tracker.debian.org/tracker/CVE-2026-120474
ubuntu.com/security/CVE-2026-120474
cve.org/CVERecord?id=CVE-2026-120474