Quick answers
- Is CVE-2023-49293 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2023-49293 being exploited in the wild.
- How severe is CVE-2023-49293?
- Low severity, with a CVSS score of 3.1, published 5 December 2023.
- Which products and versions are affected?
- Vite >=4.4.0 <4.4.12, 4.5.0, >=5.0.0 <5.0.5.
- Is there a fix for CVE-2023-49293?
- A patch was published on 2023-12-05: Fixed in vite@4.4.12, vite@4.5.1, vite@5.0.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2023-49293 attacked?
- It is attacked over the network.
- Am I affected by CVE-2023-49293?
- Check whether you run Vite at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This is a reflected XSS vulnerability (CWE-79) in Vite's HTML transformation pipeline. When `server.transformIndexHtml` is called with an unmodified request URL (as documented in SSR guides) and the HTML contains inline module scripts, Vite transforms these scripts into proxy script tags with dynamically generated paths. An attacker can break out of the script src attribute by injecting a malicious URL query string (e.g., `?"%3E%3C/script%3E%3Cscript%3Ealert('boom')</script>`), causing arbitrary HTML/JavaScript to be injected into the transformed output. The vulnerability affects apps using `appType: 'custom'` with the default Vite HTML middleware and requires user interaction (clicking a malicious link). Patched in vite 4.4.12, 4.5.1, and 5.0.5.
Affected products
- Vite Vite >=4.4.0 <4.4.12, 4.5.0, >=5.0.0 <5.0.5
Identifiers
- CVE-2023-49293
- GHSA-92r3-m2mg-pj97
Timeline
- 2023-12-04: disclosed
- 2023-12-05: patched: Fixed in vite@4.4.12, vite@4.5.1, vite@5.0.5