CLSA-2026-1790236505

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Import Source
https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json
JSON Data
https://api.osv.dev/v1/vulns/CLSA-2026-1790236505
Upstream
  • CVE-2026-49975
Published
2026-09-24T07:55:16Z
Modified
2026-10-26T09:32:04Z
Summary
Fix CVE(s): CVE-2026-49975
Details
  • SECURITY UPDATE: denial of service via an unbounded number of HTTP/2 request header lines
    • debian/patches/CVE-2026-49975.patch: add the max_headers directive (default 1000) and enforce it in ngx_http_process_request_headers() and ngx_http_v2_state_process_header(), so a client can no longer drive unbounded per-request header-list growth over HTTP/2; the counter is appended to the end of struct ngx_http_request_s (not inside ngx_http_headers_in_t, which is embedded by value and would shift every later request field) and max_headers to the end of ngx_http_core_srv_conf_t, so every existing field offset is preserved and prebuilt third-party dynamic modules stay ABI-compatible
    • CVE-2026-49975
References

Affected packages

TuxCare:Ubuntu:18.04
libnginx-mod-http-auth-pam

Package

Name
libnginx-mod-http-auth-pam
Purl
pkg:deb/tuxcare/libnginx-mod-http-auth-pam?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-cache-purge

Package

Name
libnginx-mod-http-cache-purge
Purl
pkg:deb/tuxcare/libnginx-mod-http-cache-purge?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-dav-ext

Package

Name
libnginx-mod-http-dav-ext
Purl
pkg:deb/tuxcare/libnginx-mod-http-dav-ext?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-echo

Package

Name
libnginx-mod-http-echo
Purl
pkg:deb/tuxcare/libnginx-mod-http-echo?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-fancyindex

Package

Name
libnginx-mod-http-fancyindex
Purl
pkg:deb/tuxcare/libnginx-mod-http-fancyindex?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-geoip

Package

Name
libnginx-mod-http-geoip
Purl
pkg:deb/tuxcare/libnginx-mod-http-geoip?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-headers-more-filter

Package

Name
libnginx-mod-http-headers-more-filter
Purl
pkg:deb/tuxcare/libnginx-mod-http-headers-more-filter?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-image-filter

Package

Name
libnginx-mod-http-image-filter
Purl
pkg:deb/tuxcare/libnginx-mod-http-image-filter?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-lua

Package

Name
libnginx-mod-http-lua
Purl
pkg:deb/tuxcare/libnginx-mod-http-lua?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-ndk

Package

Name
libnginx-mod-http-ndk
Purl
pkg:deb/tuxcare/libnginx-mod-http-ndk?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-perl

Package

Name
libnginx-mod-http-perl
Purl
pkg:deb/tuxcare/libnginx-mod-http-perl?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-subs-filter

Package

Name
libnginx-mod-http-subs-filter
Purl
pkg:deb/tuxcare/libnginx-mod-http-subs-filter?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-uploadprogress

Package

Name
libnginx-mod-http-uploadprogress
Purl
pkg:deb/tuxcare/libnginx-mod-http-uploadprogress?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-upstream-fair

Package

Name
libnginx-mod-http-upstream-fair
Purl
pkg:deb/tuxcare/libnginx-mod-http-upstream-fair?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-http-xslt-filter

Package

Name
libnginx-mod-http-xslt-filter
Purl
pkg:deb/tuxcare/libnginx-mod-http-xslt-filter?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-mail

Package

Name
libnginx-mod-mail
Purl
pkg:deb/tuxcare/libnginx-mod-mail?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-nchan

Package

Name
libnginx-mod-nchan
Purl
pkg:deb/tuxcare/libnginx-mod-nchan?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-rtmp

Package

Name
libnginx-mod-rtmp
Purl
pkg:deb/tuxcare/libnginx-mod-rtmp?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
libnginx-mod-stream

Package

Name
libnginx-mod-stream
Purl
pkg:deb/tuxcare/libnginx-mod-stream?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
nginx

Package

Name
nginx
Purl
pkg:deb/tuxcare/nginx?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
nginx-common

Package

Name
nginx-common
Purl
pkg:deb/tuxcare/nginx-common?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
nginx-core

Package

Name
nginx-core
Purl
pkg:deb/tuxcare/nginx-core?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
nginx-doc

Package

Name
nginx-doc
Purl
pkg:deb/tuxcare/nginx-doc?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
nginx-extras

Package

Name
nginx-extras
Purl
pkg:deb/tuxcare/nginx-extras?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
nginx-full

Package

Name
nginx-full
Purl
pkg:deb/tuxcare/nginx-full?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"
nginx-light

Package

Name
nginx-light
Purl
pkg:deb/tuxcare/nginx-light?distro=ubuntu-18.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.14.0-0ubuntu1.11+tuxcare.els9

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790236505.json"