CVE-2026-34127 json
Stored Cross-Site Scripting (XSS) via Configuration File Import on TP-Link's TL-SG108PE
published 2026-05-29 5 mo ago modified 2026-07-22 3 mo ago also EUVD-2026-33420
- cvss
- 4.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
A stored cross-site scripting (XSS) vulnerability has been identified in the web management interface of TP-Link's TL-SG108PE v5 switch due to improper sanitation of the SYSNAM configuration parameter during configuration file import. An attacker with administrator access can inject malicious script into the device configuration, which may be stored and executed in the administrator’s browser when the affected interface is viewed.
Successful exploitation may allow session cookie theft, unauthorized configuration changes, or access to sensitive information exposed through the management interface.
Patch / fix
- TP-Link Systems Inc. TL-SG108PE v5 1.0.1 Build 260330
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:H/SC:L/SI:N/SA:L |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:H/SC:L/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected products
- TP-Link Systems Inc. TL-SG108PE v5
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
tp-link.com
/en/support/download/tl-sg108pe/v5/#Firmware
patch, product
-
tp-link.com
/us/support/download/tl-sg108pe/v5/#Firmware
patch, product
-
tp-link.com
/us/support/faq/5110/
vendor-advisory
Sources
- CVE List CVE-2026-34127
- NVD CVE-2026-34127
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