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TI-2026-30112 Aliases CVE-2026-41539GHSA-hc5c-8r54-29r3

Cross-site scripting in QNAP QTS

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
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 cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to bypass security mechanisms or read application data. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3492 build 20260507 and later QuTS hero h5.2.9.3499 build 20260514 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3500 build 20260520 and later

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00193 8th percentileScored 2026-11-07
Fix Fixed QTS (QNAP Systems Inc.): 5.2.9.3492 build 20260507QuTS hero (QNAP Systems Inc.): h5.2.9.3499 build 20260514, h5.3.4.3500 build 20260520, h6.0.0.3500 build 20260520

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

VendorProductAffected versionsFixed inStatusSource
QNAPQTS5.2.0 to before 5.2.9.3492 build 202605075.2.9.3492 build 20260507Patch availableCNA
QNAPQuTS heroh5.2.0 to before h5.2.9.3499 build 20260514; h5.3.0 to before h5.3.4.3500 build 20260520; ? to before h6.0.0.3500 build 20260520h5.2.9.3499 build 20260514, h5.3.4.3500 build 20260520, h6.0.0.3500 build 20260520Patch availableCNA
  • QTS VendorQNAP Affected 5.2.0 to before 5.2.9.3492 build 20260507 Fixed in 5.2.9.3492 build 20260507 Patch available CNA
  • QuTS hero VendorQNAP Affected h5.2.0 to before h5.2.9.3499 build 20260514; h5.3.0 to before h5.3.4.3500 build 20260520; ? to before h6.0.0.3500 build 20260520 Fixed in h5.2.9.3499 build 20260514, h5.3.4.3500 build 20260520, h6.0.0.3500 build 20260520 Patch available CNA

CPE configurations NVD · 56

CPEVersionsRoleVendor
cpe:2.3:o:qnap:qts:5.2.0.2737:build_20240417:*:*:*:*:*:*5.2.0.2737 build_20240417VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2744:build_20240424:*:*:*:*:*:*5.2.0.2744 build_20240424VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2782:build_20240601:*:*:*:*:*:*5.2.0.2782 build_20240601VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2802:build_20240620:*:*:*:*:*:*5.2.0.2802 build_20240620VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2823:build_20240711:*:*:*:*:*:*5.2.0.2823 build_20240711VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2851:build_20240808:*:*:*:*:*:*5.2.0.2851 build_20240808VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2860:build_20240817:*:*:*:*:*:*5.2.0.2860 build_20240817VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.1.2930:build_20241025:*:*:*:*:*:*5.2.1.2930 build_20241025VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.2.2950:build_20241114:*:*:*:*:*:*5.2.2.2950 build_20241114VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.3.3006:build_20250108:*:*:*:*:*:*5.2.3.3006 build_20250108VulnerableQNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2737:build_20240417:*:*:*:*:*:* Versions 5.2.0.2737 build_20240417 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2744:build_20240424:*:*:*:*:*:* Versions 5.2.0.2744 build_20240424 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2782:build_20240601:*:*:*:*:*:* Versions 5.2.0.2782 build_20240601 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2802:build_20240620:*:*:*:*:*:* Versions 5.2.0.2802 build_20240620 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2823:build_20240711:*:*:*:*:*:* Versions 5.2.0.2823 build_20240711 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2851:build_20240808:*:*:*:*:*:* Versions 5.2.0.2851 build_20240808 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2860:build_20240817:*:*:*:*:*:* Versions 5.2.0.2860 build_20240817 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.1.2930:build_20241025:*:*:*:*:*:* Versions 5.2.1.2930 build_20241025 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.2.2950:build_20241114:*:*:*:*:*:* Versions 5.2.2.2950 build_20241114 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.3.3006:build_20250108:*:*:*:*:*:* Versions 5.2.3.3006 build_20250108 Vulnerable ·QNAP
Show 46 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:qnap:qts:5.2.4.3070:build_20250312:*:*:*:*:*:*5.2.4.3070 build_20250312VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.4.3079:build_20250321:*:*:*:*:*:*5.2.4.3079 build_20250321VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.4.3092:build_20250403:*:*:*:*:*:*5.2.4.3092 build_20250403VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.5.3145:build_20250526:*:*:*:*:*:*5.2.5.3145 build_20250526VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.6.3195:build_20250715:*:*:*:*:*:*5.2.6.3195 build_20250715VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.6.3229:build_20250818:*:*:*:*:*:*5.2.6.3229 build_20250818VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.7.3256:build_20250913:*:*:*:*:*:*5.2.7.3256 build_20250913VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.7.3297:build_20251024:*:*:*:*:*:*5.2.7.3297 build_20251024VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.8.3332:build_20251128:*:*:*:*:*:*5.2.8.3332 build_20251128VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.8.3350:build_20251216:*:*:*:*:*:*5.2.8.3350 build_20251216VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.8.3359:build_20251225:*:*:*:*:*:*5.2.8.3359 build_20251225VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.9.3410:build_20260214:*:*:*:*:*:*5.2.9.3410 build_20260214VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.9.3451:build_20260327:*:*:*:*:*:*5.2.9.3451 build_20260327VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2737:build_20240417:*:*:*:*:*:*h5.2.0.2737 build_20240417VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2782:build_20240601:*:*:*:*:*:*h5.2.0.2782 build_20240601VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2789:build_20240607:*:*:*:*:*:*h5.2.0.2789 build_20240607VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2802:build_20240620:*:*:*:*:*:*h5.2.0.2802 build_20240620VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2823:build_20240711:*:*:*:*:*:*h5.2.0.2823 build_20240711VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2851:build_20240808:*:*:*:*:*:*h5.2.0.2851 build_20240808VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2860:build_20240817:*:*:*:*:*:*h5.2.0.2860 build_20240817VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.1.2929:build_20241025:*:*:*:*:*:*h5.2.1.2929 build_20241025VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.1.2940:build_20241105:*:*:*:*:*:*h5.2.1.2940 build_20241105VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.2.2952:build_20241116:*:*:*:*:*:*h5.2.2.2952 build_20241116VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.3.3006:build_20250108:*:*:*:*:*:*h5.2.3.3006 build_20250108VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.4.3070:build_20250312:*:*:*:*:*:*h5.2.4.3070 build_20250312VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.4.3079:build_20250321:*:*:*:*:*:*h5.2.4.3079 build_20250321VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.5.3138:build_20250519:*:*:*:*:*:*h5.2.5.3138 build_20250519VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.6.3195:build_20250715:*:*:*:*:*:*h5.2.6.3195 build_20250715VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.7.3256:build_20250913:*:*:*:*:*:*h5.2.7.3256 build_20250913VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.7.3297:build_20251024:*:*:*:*:*:*h5.2.7.3297 build_20251024VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.8.3321:build_20251117:*:*:*:*:*:*h5.2.8.3321 build_20251117VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.8.3350:build_20251216:*:*:*:*:*:*h5.2.8.3350 build_20251216VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.8.3359:build_20251225:*:*:*:*:*:*h5.2.8.3359 build_20251225VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.9.3410:build_20260214:*:*:*:*:*:*h5.2.9.3410 build_20260214VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.9.3492:build_20260507:*:*:*:*:*:*h5.2.9.3492 build_20260507VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.0.3115:build_20250430:*:*:*:*:*:*h5.3.0.3115 build_20250430VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.0.3145:build_20250530:*:*:*:*:*:*h5.3.0.3145 build_20250530VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.0.3192:build_20250716:*:*:*:*:*:*h5.3.0.3192 build_20250716VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.1.3250:build_20250912:*:*:*:*:*:*h5.3.1.3250 build_20250912VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.1.3292:build_20251024:*:*:*:*:*:*h5.3.1.3292 build_20251024VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.2.3354:build_20251225:*:*:*:*:*:*h5.3.2.3354 build_20251225VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.3.3424:build_20260305:*:*:*:*:*:*h5.3.3.3424 build_20260305VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h6.0.0.3324:build_20251125:*:*:*:*:*:*h6.0.0.3324 build_20251125VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h6.0.0.3382:build_20260122:*:*:*:*:*:*h6.0.0.3382 build_20260122VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h6.0.0.3397:build_20260206:*:*:*:*:*:*h6.0.0.3397 build_20260206VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h6.0.0.3459:build_20260409:*:*:*:*:*:*h6.0.0.3459 build_20260409VulnerableQNAP
  • cpe:2.3:o:qnap:qts:5.2.4.3070:build_20250312:*:*:*:*:*:* Versions 5.2.4.3070 build_20250312 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.4.3079:build_20250321:*:*:*:*:*:* Versions 5.2.4.3079 build_20250321 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.4.3092:build_20250403:*:*:*:*:*:* Versions 5.2.4.3092 build_20250403 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.5.3145:build_20250526:*:*:*:*:*:* Versions 5.2.5.3145 build_20250526 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.6.3195:build_20250715:*:*:*:*:*:* Versions 5.2.6.3195 build_20250715 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.6.3229:build_20250818:*:*:*:*:*:* Versions 5.2.6.3229 build_20250818 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.7.3256:build_20250913:*:*:*:*:*:* Versions 5.2.7.3256 build_20250913 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.7.3297:build_20251024:*:*:*:*:*:* Versions 5.2.7.3297 build_20251024 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.8.3332:build_20251128:*:*:*:*:*:* Versions 5.2.8.3332 build_20251128 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.8.3350:build_20251216:*:*:*:*:*:* Versions 5.2.8.3350 build_20251216 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.8.3359:build_20251225:*:*:*:*:*:* Versions 5.2.8.3359 build_20251225 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.9.3410:build_20260214:*:*:*:*:*:* Versions 5.2.9.3410 build_20260214 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.9.3451:build_20260327:*:*:*:*:*:* Versions 5.2.9.3451 build_20260327 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2737:build_20240417:*:*:*:*:*:* Versions h5.2.0.2737 build_20240417 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2782:build_20240601:*:*:*:*:*:* Versions h5.2.0.2782 build_20240601 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2789:build_20240607:*:*:*:*:*:* Versions h5.2.0.2789 build_20240607 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2802:build_20240620:*:*:*:*:*:* Versions h5.2.0.2802 build_20240620 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2823:build_20240711:*:*:*:*:*:* Versions h5.2.0.2823 build_20240711 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2851:build_20240808:*:*:*:*:*:* Versions h5.2.0.2851 build_20240808 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2860:build_20240817:*:*:*:*:*:* Versions h5.2.0.2860 build_20240817 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.1.2929:build_20241025:*:*:*:*:*:* Versions h5.2.1.2929 build_20241025 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.1.2940:build_20241105:*:*:*:*:*:* Versions h5.2.1.2940 build_20241105 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.2.2952:build_20241116:*:*:*:*:*:* Versions h5.2.2.2952 build_20241116 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.3.3006:build_20250108:*:*:*:*:*:* Versions h5.2.3.3006 build_20250108 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.4.3070:build_20250312:*:*:*:*:*:* Versions h5.2.4.3070 build_20250312 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.4.3079:build_20250321:*:*:*:*:*:* Versions h5.2.4.3079 build_20250321 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.5.3138:build_20250519:*:*:*:*:*:* Versions h5.2.5.3138 build_20250519 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.6.3195:build_20250715:*:*:*:*:*:* Versions h5.2.6.3195 build_20250715 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.7.3256:build_20250913:*:*:*:*:*:* Versions h5.2.7.3256 build_20250913 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.7.3297:build_20251024:*:*:*:*:*:* Versions h5.2.7.3297 build_20251024 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.8.3321:build_20251117:*:*:*:*:*:* Versions h5.2.8.3321 build_20251117 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.8.3350:build_20251216:*:*:*:*:*:* Versions h5.2.8.3350 build_20251216 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.8.3359:build_20251225:*:*:*:*:*:* Versions h5.2.8.3359 build_20251225 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.9.3410:build_20260214:*:*:*:*:*:* Versions h5.2.9.3410 build_20260214 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.9.3492:build_20260507:*:*:*:*:*:* Versions h5.2.9.3492 build_20260507 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.0.3115:build_20250430:*:*:*:*:*:* Versions h5.3.0.3115 build_20250430 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.0.3145:build_20250530:*:*:*:*:*:* Versions h5.3.0.3145 build_20250530 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.0.3192:build_20250716:*:*:*:*:*:* Versions h5.3.0.3192 build_20250716 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.1.3250:build_20250912:*:*:*:*:*:* Versions h5.3.1.3250 build_20250912 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.1.3292:build_20251024:*:*:*:*:*:* Versions h5.3.1.3292 build_20251024 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.2.3354:build_20251225:*:*:*:*:*:* Versions h5.3.2.3354 build_20251225 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.3.3424:build_20260305:*:*:*:*:*:* Versions h5.3.3.3424 build_20260305 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h6.0.0.3324:build_20251125:*:*:*:*:*:* Versions h6.0.0.3324 build_20251125 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h6.0.0.3382:build_20260122:*:*:*:*:*:* Versions h6.0.0.3382 build_20260122 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h6.0.0.3397:build_20260206:*:*:*:*:*:* Versions h6.0.0.3397 build_20260206 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h6.0.0.3459:build_20260409:*:*:*:*:*:* Versions h6.0.0.3459 build_20260409 Vulnerable ·QNAP

Remediation

  • Fix · CNA QTS (QNAP Systems Inc.) Fixed in 5.2.9.3492 build 20260507
  • Fix · CNA QuTS hero (QNAP Systems Inc.) Fixed in h5.2.9.3499 build 20260514, h5.3.4.3500 build 20260520, h6.0.0.3500 build 20260520

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41539
  2. 2026-10-03 Alias added: GHSA-hc5c-8r54-29r3

References

  • TI-2020-02221 Command Injection Vulnerability in QTS and QuTS hero KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05101 Improper input validation in QNAP NAS devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-14137 Improper input validation in QNAP QTS KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-14131 Cross-site scripting in QNAP QTS KEVCVSS 3.1HIGH 8.0
See all 282 →

Sources