TI-2021-12843 Aliases CVE-2021-33425 GHSA-c35r-9rpc-98gc

A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for…

LOW 25CWE-79Published 2021-05-25 · Updated 2026-07-09

Key facts

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

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

Summary

A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for OpenWRT LuCI version 19.07 which allows attackers to inject arbitrary Javascript in the OpenWRT Hostname via the Hostname Change operation.

Why it matters now

EPSS 0.0051 43rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:openwrt:openwrt:19.07.0:-::::::	19.07.0	Vulnerable	openwrt

cpe:2.3:o:openwrt:openwrt:19.07.0:-:*:*:*:*:*:* Versions 19.07.0 Vulnerable ·openwrt

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-33425
2026-10-03 Alias added: GHSA-c35r-9rpc-98gc

References

Patch 1

[oss-security] 20211109 [CVE-2021-43523] Incorrect handling of special characters in domain names in uclibc and uclibc-ng

TI-2024-13053 Improper input validation in MediaTek MT6890, MT7915, MT7916, MT7981, MT7986 CVSS 3.1CRITICAL 9.8
TI-2026-44983 Cross-site scripting in openwrt CVSS 3.1CRITICAL 9.6
TI-2026-40045 OpenWrt: EAD Integer Underflow → Pre-Auth Denial of Service CVSS 3.1MEDIUM 6.5
TI-2023-09914 LuCI openwrt-22.03 branch git-22.361.69894-438c598 was discovered to contain a stored… CVSS 3.1MEDIUM 5.4
TI-2026-44982 OpenWrt: ACL bypass and arbitrary root file read via cgi-io cgi-download CVSS 3.1MEDIUM 4.9
TI-2026-23701 OpenWrt Project has a Stack-based Buffer Overflow vulnerability via IPv6 reverse DNS lookup CVSS 4.0CRITICAL 9.5

See all 136 →

Sources

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