DEBIAN-CVE-2026-58055

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Source
https://security-tracker.debian.org/tracker/CVE-2026-58055
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58055.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-58055
Upstream
Published
2026-06-28T02:16:32Z
Modified
2026-09-14T17:03:22Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:L/SA:N/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 CVSS Calculator
Summary
[none]
Details

nghttp2's nghttpx proxy through 1.69.0 forwards an HTTP/1.1 Upgrade request that also carries a Content-Length header and body onto reusable keep-alive backend connections, re-adding the Upgrade and Connection headers while passing Content-Length verbatim. A backend that resolves the resulting ambiguous message in the attacker's favor enables HTTP request/response smuggling and cross-client response-queue poisoning.

References

Affected packages

Debian:12 / nghttp2

Package

Name
nghttp2
Purl
pkg:deb/debian/nghttp2?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.52.0-1
1.52.0-1+deb12u1
1.52.0-1+deb12u2
1.52.0-1+deb12u3
1.53.0-1
1.54.0-1
1.55.1-1
1.56.0-1
1.57.0-1
1.58.0-1
1.59.0-1
1.60.0-1
1.61.0-1
1.62.1-1
1.62.1-2
1.63.0-1
1.64.0-1
1.64.0-1.1
1.68.0-1
1.68.0-2
1.68.1-1
1.69.0-1
1.70.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58055.json"

Debian:13 / nghttp2

Package

Name
nghttp2
Purl
pkg:deb/debian/nghttp2?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.64.0-1.1
1.64.0-1.1+deb13u1
1.68.0-1
1.68.0-2
1.68.1-1
1.69.0-1
1.70.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58055.json"

Debian:14 / nghttp2

Package

Name
nghttp2
Purl
pkg:deb/debian/nghttp2?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.70.0-1

Affected versions

1.*
1.64.0-1.1
1.68.0-1
1.68.0-2
1.68.1-1
1.69.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58055.json"