CVE-2023-41049
Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client
@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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client
@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.
- Record
CVE-2023-41049- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2023-2603
@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.
- Record
EUVD-2023-2603- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vp4f-wxgw-7x8x
Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client
Impact
Improper input validation in the init function allows arbitrary javascript to be executed using the javascript: prefix
SSO.init('javascript:alert("javascript successfully injected")')
Patches
This vulnerability was patched on version 0.1.0
Workarounds
This vulnerability can be prevented if user input correctly sanitized or there is no user input pass to the init function
- Record
GHSA-vp4f-wxgw-7x8x- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
@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.
- Record
CVE-2023-41049- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client
@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.
- Record
CVE-2023-41049- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-vp4f-wxgw-7x8x
Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client
Impact
Improper input validation in the init function allows arbitrary javascript to be executed using the javascript: prefix
SSO.init('javascript:alert("javascript successfully injected")')
Patches
This vulnerability was patched on version 0.1.0
Workarounds
This vulnerability can be prevented if user input correctly sanitized or there is no user input pass to the init function
- Record
GHSA-vp4f-wxgw-7x8x- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@dcl/single-sign-on-clientnpm | before 0.1.0 | 0.1.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-41049 is a high vulnerability (CVSS 7.5) in Decentraland Single-sign-on-client, published September 1, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. Fixed in @dcl/single-sign-on-client 0.1.0.
References
github.com/decentraland/single-sign-on-client/security/advisories/GHSA-vp4f-wxgw-7x8x
nvd.nist.gov/vuln/detail/CVE-2023-41049