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CVE-2026-40487: Improper Neutralization of Input During Web Page Generation

🗓️ 18 Apr 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Authenticated users can upload arbitrary files to Postiz before 2.21.6 for Stored XSS.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-40487
18 Apr 202601:19
–attackerkb
circl
Circl
CVE-2026-40487
18 Apr 202603:13
–circl
cnnvd
CNNVD
Gitroom Postiz 安全漏洞
18 Apr 202600:00
–cnnvd
cve
CVE
CVE-2026-40487
18 Apr 202601:19
–cve
cvelist
Cvelist
CVE-2026-40487 Postiz Has Unrestricted File Upload via MIME Type Spoofing that Leads to Stored XSS
18 Apr 202601:19
–cvelist
euvd
EUVD
EUVD-2026-23634
18 Apr 202601:19
–euvd
kitploit
Kitploit
CVE-2026-40487
24 Sep 202616:08
–kitploit
nvd
NVD
CVE-2026-40487
18 Apr 202602:16
–nvd
ptsecurity
Positive Technologies
PT-2026-33243
16 Apr 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-40487
20 Apr 202619:22
–redhatcve
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23 Apr 2026 00:00Current
6Medium risk
Vulners AI Score6
CVSS 3.18.9 - 9
EPSS0.00255
SSVC
0