CVE catalog
CVE-2026-6402
webpack-dev-server versions up to and including 5.2.3 are vulnerable to cross-origin source code exposure when serving over a non-potentially trustworthy origin such as plain HTTP. The previous fix re
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.29% · Oct 25, 2026
A flaw was found in webpack-dev-server. When the development server operates over plain HTTP, a remote attacker can exploit a cross-origin source code exposure vulnerability. This allows a malicious website, visited by a developer, to load the bundled application source code as a script and read it across origins. Consequently, this could lead to the disclosure of sensitive application source code. webpack-dev-server: webpack-dev-server: Information disclosure due to cross-origin source code exposure The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | webpack-dev-server | Not reported | 5.2.4 | fixed |
| Opensuse | agama-web-ui | tumbleweed | 21+360.16caae772-44.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | webpack-dev-server | cpe | Not reported | 5.2.4 | Not reported | Not reported | Not reported |
| Opensuse | agama-web-ui | rpm | tumbleweed | 21+360.16caae772-44.1 | Not reported | OPENSUSE-SU-2026:10979-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [agama-web-ui]Fixed
Source package: [agama-web-ui]
Details (1)
23+278.4096bc82f-51.1· noarch · tumbleweedFixed · Fixed:
21+360.16caae772-44.1nvd · agama-web-ui · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-6402]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10979-1]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6402.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]