# CVE-2026-19876: Reflected XSS in INFINITT ULite login error page (pre-auth)

Status: published. Published: 2026-11-06. Updated: 2026-11-06.

A reflected cross-site scripting (XSS) vulnerability in the login/SSO error page of INFINITT ULite 5.0.2.1_BN48_20260528 and earlier allows an unauthenticated remote attacker to execute arbitrary JavaScript in the browser of a victim who opens a crafted link. An unsanitized request parameter is reflected without output encoding. Fixed in ULite 5.0.2.1 BN50.

## Remediation

- fix: Upgrade to INFINITT ULite 5.0.2.1 BN50 or later. As defense in depth, remove 'unsafe-inline' from the Content-Security-Policy script-src. (source: CNA: NCSC.ch)

## Affected products and versions

- INFINITT Healthcare / INFINITT ULite: ≥ 0; ≤ 5.0.2.1_BN48_20260528 (affected, custom); 5.0.2.1_BN50 (unaffected, custom). Source: CNA: NCSC.ch

## Severity and prioritization

- 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; source: CNA: NCSC.ch

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.infinitt.com/contents/content.php?url=INFINITT-SA-2026-001 (CNA: NCSC.ch)

## Provenance

- CNA: NCSC.ch: https://www.cve.org/CVERecord?id=CVE-2026-19876; retrieved 2026-11-06; source updated 2026-11-06

Revision: 3580386bc685cc0b229a41909144d4f52983d336eb693c9139967b8cee580c88

Canonical: https://y2.dev/cve/CVE-2026-19876

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