TI-2026-07643 Aliases CVE-2026-8699 GHSA-2rgg-wpwx-p48p

Stored Cross-Site Scripting (XSS) in TP-Link Archer C5 Web Management Interface

LOW 33CWE-79Published 2026-07-02 · Updated 2026-07-02

Key facts

Attack vector: Adjacent network
Privileges required: High
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

A stored Cross-Site Scripting (XSS) vulnerability has been identified in the web-based management interface of Archer C5 v6.8 routers, due to insufficient server-side validation and lack of proper output encoding of user-controlled input in a certain field. An attacker with administrative privileges can inject crafted HTML or JS payloads into the affected field. The payload is stored and later executed when the affected page is rendered in an administrator's browser.Successful exploitation allows execution of arbitrary JavaScript in an admin's browser, potentially leading to session hijacking and unauthorized access to router configuration, possibly resulting in exposure of sensitive data and modification of device settings. The vulnerability affects ISP-managed firmware variants of the product. Remediation is coordinated through service providers.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00279 20th percentileScored 2026-11-07

Fix Fixed Archer C5 v6.8 (TP-Link Systems Inc.): 0.2.0 3.0.0 v6063.0 Build 260331 Rel.37416n

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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
TP-Link	Archer C5 v6.8	before 0.2.0 3.0.0 v6063.0 Build 260331 Rel.37416n	0.2.0 3.0.0 v6063.0 Build 260331 Rel.37416n	Patch available	CNA

Archer C5 v6.8 VendorTP-Link Affected before 0.2.0 3.0.0 v6063.0 Build 260331 Rel.37416n Fixed in 0.2.0 3.0.0 v6063.0 Build 260331 Rel.37416n Patch available CNA

Remediation

Fix · CNA Archer C5 v6.8 (TP-Link Systems Inc.) Fixed in 0.2.0 3.0.0 v6063.0 Build 260331 Rel.37416n

Timeline

2026-10-02 Threatist record created from CVE-2026-8699
2026-10-03 Alias added: GHSA-2rgg-wpwx-p48p

References

Advisory 1

https://www.tp-link.com/en/support/faq/5165/

TI-2023-16571 TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain… KEVCVSS 3.1HIGH 8.8
TI-2023-01313 Command injection in TP-Link Archer AX21 KEVCVSS 3.1HIGH 8.8
TI-2020-14907 TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the… KEVCVSS 3.1HIGH 8.8
TI-2025-08589 Authenticated RCE via Parental Control command injection KEVCVSS 4.0HIGH 8.6
TI-2015-02672 Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317… KEVCVSS 3.1HIGH 7.5
TI-2023-27456 Authentication bypass by spoofing in TP-Link TL-WR841N KEVCVSS 3.1MEDIUM 6.5

See all 636 →

Sources

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