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CVE-2026-109829: Origin Validation Error

🗓️ 15 Oct 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Origin validation error in undici allows persistent cache poisoning and private data disclosure.

Related
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-109829
15 Oct 202618:42
–circl
cve
CVE
CVE-2026-109829
15 Oct 202618:28
–cve
cvelist
Cvelist
CVE-2026-109829 undici vulnerable to cache poisoning and cross-user disclosure via cross-origin redirects
15 Oct 202618:28
–cvelist
debiancve
Debian CVE
CVE-2026-109829
15 Oct 202618:28
–debiancve
euvd
EUVD
EUVD-2026-102309
15 Oct 202618:28
–euvd
nvd
NVD
CVE-2026-109829
15 Oct 202619:17
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-109829
15 Oct 202619:17
–osv_debian
ptsecurity
Positive Technologies
PT-2026-115119
15 Oct 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-109829
15 Oct 202620:16
–redhatcve
ubuntucve
UbuntuCve
CVE-2026-109829
16 Oct 202600:00
–ubuntucve
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16 Oct 2026 00:00Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.4
EPSS0.00148
SSVC
0