CVE-2025-59430 json
Mesh Connect JS SDK Vulnerable to Cross Site Scripting via createLink.openLink
published last yr. modified 29d ago also GHSA-vh3f-qppr-j97f , EUVD-2025-30451
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 37%
- public exploits
- 0
- none known
Summary
Mesh Connect JS SDK contains JS libraries for integrating with Mesh Connect. Prior to version 3.3.2, the lack of sanitization of URLs protocols in the createLink.openLink function enables the execution of arbitrary JavaScript code within the context of the parent page. This is technically indistinguishable from a real page at the rendering level and allows access to the parent page DOM, storage, session, and cookies. If the attacker can specify customIframeId, they can hijack the source of existing iframes. This issue has been patched in version 3.3.2.
Patch / fix
- npm @meshconnect/web-link-sdk 3.3.2
- github.com/FrontFin/mesh-web-sdk@7f22148 commit
- github.com/FrontFin/mesh-web-sdk#124 pull request
Is CVE-2025-59430 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N |
| GitHub | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @meshconnect/web-link-sdk | <3.3.2 |
3.3.2 |
Affected products
- FrontFin mesh-web-sdk
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/FrontFin/mesh-web-sdk/pull/124
web
-
github.com
/FrontFin/mesh-web-sdk/commit/7f22148516d58e21a8b7670dde927d614c0d15c2
web
-
github.com
/FrontFin/mesh-web-sdk/security/advisories/GHSA-vh3f-qppr-j97f
web
-
github.com
/FrontFin/mesh-web-sdk/blob/cf013b85ab95d64c63cbe46d6cb14695474924e7/packages/link/src/Link.ts#L441
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-59430
advisory
-
github.com
/FrontFin/mesh-web-sdk
package
Sources
- CVE List CVE-2025-59430
- GitHub Advisory GHSA-vh3f-qppr-j97f
- NVD CVE-2025-59430
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