Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client
Priority LOW 39CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
@dcl/single-sign-on-client is an open source npm library which deals with single sign on authentication flows. Improper input validation in the `init` function allows arbitrary javascript to be executed using the `javascript:` prefix. This vulnerability has been patched on version `0.1.0`. Users are advised to upgrade. Users unable to upgrade should limit untrusted user input to the `init` function.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00457 39th percentileScored 2026-11-07
Fix Fixed single-sign-on-client (decentraland): 0.1.0@dcl/single-sign-on-client (npm): 0.1.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| decentraland | single-sign-on-client | before 0.1.0 | 0.1.0 | Patch available | CNA |
| — | @dcl/single-sign-on-client (npm) | before 0.1.0 | 0.1.0 | Patch available | GHSA-vp4f-wxgw-7x8x |
- single-sign-on-client Vendordecentraland Affected before 0.1.0 Fixed in 0.1.0 Patch available CNA
- @dcl/single-sign-on-client (npm) Vendor— Affected before 0.1.0 Fixed in 0.1.0 Patch available GHSA-vp4f-wxgw-7x8x
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:decentraland:single_sign_on_client:*:*:*:*:*:node.js:*:* | before 0.1.0 | Vulnerable | decentraland |
- cpe:2.3:a:decentraland:single_sign_on_client:*:*:*:*:*:node.js:*:* Versions before 0.1.0 Vulnerable ·decentraland
Remediation
- Fix · CNA single-sign-on-client (decentraland) Fixed in 0.1.0
- Fix · GHSA-vp4f-wxgw-7x8x @dcl/single-sign-on-client (npm) Fixed in 0.1.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-41049
- 2026-10-03 Alias added: GHSA-vp4f-wxgw-7x8x
References
Advisory 2
Sources
- CVE-2023-41049 · CVE Program
- CVE-2023-41049 · NVD
- FIRST EPSS
- GHSA-vp4f-wxgw-7x8x · GitHub Advisory Database · CC BY 4.0
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