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CVE-2026-19879

🗓️ 14 Aug 2026 15:17:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 3 Views

Undertow writeString() narrows Unicode to bytes in response headers, enabling integrity impact.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-19879
14 Aug 202614:51
attackerkb
cve
CVE
CVE-2026-19879
14 Aug 202614:51
cve
cvelist
Cvelist
CVE-2026-19879 Io.undertow/undertow: undertow: http response header integrity issue due to character truncation
14 Aug 202614:51
cvelist
debiancve
Debian CVE
CVE-2026-19879
14 Aug 202614:51
debiancve
euvd
EUVD
EUVD-2026-58670
14 Aug 202614:51
euvd
nvd
NVD
CVE-2026-19879
14 Aug 202615:17
nvd
osv
OSV
DEBIAN-CVE-2026-19879
14 Aug 202615:17
osv
osv
OSV
UBUNTU-CVE-2026-19879
14 Aug 202615:17
osv
ptsecurity
Positive Technologies
PT-2026-72036
14 Aug 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-19879
14 Aug 202614:51
redhatcve
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu16.04allundertow0undertow_0_all.deb
Ubuntu18.04allundertow0undertow_0_all.deb
Ubuntu20.04allundertow0undertow_0_all.deb
Ubuntu22.04allundertow0undertow_0_all.deb
Ubuntu24.04allundertow0undertow_0_all.deb
Ubuntu26.04allundertow0undertow_0_all.deb

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19 Aug 2026 12:14Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.15.3
EPSS0.00235
SSVC
3