TI-2026-59223 Aliases CVE-2026-86550 GHSA-5xg9-xgmv-w59x

UXSS vulnerability in ZTE browser products

LOW 29CWE-79Published 2026-09-08 · Updated 2026-09-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

NuBrowser lacks protocol whitelist validation for the S.browser_fallback_url field of intent://, allowing attackers to inject javascript: URLs via 302 redirects. This results in a universal cross‑site scripting (UXSS) vulnerability that enables script execution within the origin of arbitrary websites.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00461 40th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
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
ZTE	NebulaOS	Versions prior to Browser V1.6.8	—	No fix listed	CNA

NebulaOS VendorZTE Affected Versions prior to Browser V1.6.8 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-86550
2026-10-03 Alias added: GHSA-5xg9-xgmv-w59x

References

Other 1

https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/874505866159006721

TI-2018-05334 Improper authentication in ZTE ZXHN H168N CVSS 3.0HIGH 8.8
TI-2018-05333 Missing authentication in ZTE ZXHN H168N CVSS 3.0HIGH 8.8
TI-2014-01839 web_shell_cmd.gch on ZTE F460 and F660 cable modems allows remote attackers to obtain… CVSS 2.0HIGH 10.0
TI-2022-22726 ZTE ZXHN-H108NS router with firmware version H108NSV1.0.7u_ZRD_GR2_A68 is vulnerable to remote stack buffer overflow. CVSS 3.1HIGH 7.5
TI-2022-18458 SQL injection in MF286R CVSS 3.1HIGH 8.8
TI-2022-18465 Command injection in MF286R CVSS 3.1CRITICAL 9.8

See all 224 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences