GHSA-wqq4-5wpv-mx2g · Severity: low · Ecosystem: npm — Undici's cookie header not cleared on cross-origin redirect in fetch
Undici is an HTTP/1.1 client written from scratch for Node.js. Prior to version 5.26.2, Undici already cleared Authorization headers on cross-origin redirects, but did not clear `Cookie` headers. By design, `cookie` headers are forbidden request headers, disallowing them to be set in RequestInit.headers in browser environments. Since undici handles headers more liberally than the spec, there was a disconnect from the assumptions the spec made, and undici's implementation of fetch. As such this may lead to accidental leakage of cookie to a third-party site or a malicious attacker who can control the redirection target (ie. an open redirector) to leak the cookie to the third party site. This was patched in version 5.26.2. There are no known workarounds.
Conclusion & alert: CVE-2023-45143 is rated Low Risk (25.4/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.10%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-04 | 0.29% | 0.10% | -0.18% |
| 2 | 2026-03-01 | 0.10% | 0.29% | +0.18% |
| 3 | 2026-02-04 | — | 0.10% | — |
Full EPSS history (37 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 3.9 | 3.1 | LOW |
|
0.5 | 3.4 | [email protected] |
| 3.5 | 3.1 | LOW |
|
2.1 | 1.4 | [email protected] |
GHSA-wqq4-5wpv-mx2g · Severity: low · Ecosystem: npm — Undici's cookie header not cleared on cross-origin redirect in fetch
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-45143: 3 source package rows (nodejs, nodejs-current, openjdk21); 18 state rows across 13 repos (3.17-main, 3.18-community, 3.18-main, 3.19-community, 3.19-main, 3.20-community, 3.20-main, 3.21-community, 3.21-main, 3.22-community, 3.22-main, edge-community, edge-main); fixed 18, open 0. | https://security.alpinelinux.org/vuln/CVE-2023-45143 |
debian
|
not yet assigned | CVE-2023-45143 not yet assigned priority: Debian including 1 source packages (node-undici), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. | https://security-tracker.debian.org/tracker/CVE-2023-45143 |
gentoo
|
high | CVE-2023-45143: 1 GLSA(s) (202505-11), 1 atom(s) (net-libs/nodejs); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-45143 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2023-45143 |
suse
|
low | CVE-2023-45143 severity low: SUSE including 74 source package names (16-18.13:nodejs16-16.20.2-150400.3.27.2, 16-18.13:npm16-16.20.2-150400.3.27.2, …), 273 product×package rows across 29 product lines (Container bci/node, Container bci/nodejs, … (29 product lines)): Known Not Affected 158, Fixed 115. | https://www.suse.com/security/cve/CVE-2023-45143/ |
ubuntu
|
medium | CVE-2023-45143 medium priority: Ubuntu including 1 source packages (node-undici), 12 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 5, not-affected 3, ignored 2, needs-triage 1, released 1. | https://ubuntu.com/security/CVE-2023-45143 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| nodejs | undici | < 5.26.2 | cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* |
| fedoraproject | fedora | 37 | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
| fedoraproject | fedora | 38 | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
| fedoraproject | fedora | 39 | cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* |