RCE in Web-Infra-Dev Rsbuild
CVE-2026-10144
Rsbuild before 2.0.9 contains a command injection vulnerability that allows attackers to execute arbitrary OS commands by supplying a crafted URL containing shell metacharacters to the server.open configuration on macOS. The openBrowser() function in packages/core/src/server/open.ts passes the URL through encodeURI() before interpolating it into a shell command executed via child_process.exec(), but because encodeURI() does not encode dollar signs, parentheses, or semicolons, embedded shell metacharacters are evaluated by /bin/sh, enabling arbitrary command execution.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.017 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/web-infra-dev/rsbuild/releases/tag/v2.0.9 (release-notes)
- github.com/web-infra-dev/rsbuild/pull/7789 (issue-tracking, patch)
- github.com/web-infra-dev/rsbuild/commit/c1e2aebd6b1bbdaece15265572c3284f934b674d (patch)
- www.vulncheck.com/advisories/rsbuild-command-injection-via-openbrowser-url-hand… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-10144?
- CVE-2026-10144 is a high-severity vulnerability in Web-Infra-Dev Rsbuild, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-09-15.
- How severe is CVE-2026-10144?
- High severity. CVSS v3 base score is 7.8 out of 10.