CLSA-2026-1781620276

See a problem?
Import Source
https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json
JSON Data
https://api.osv.dev/v1/vulns/CLSA-2026-1781620276
Upstream
CVE (3)
Published
2026-06-16T14:31:34Z
Modified
2026-10-26T09:32:05Z
Summary
Fix CVE(s): CVE-2026-0672, CVE-2026-3644, CVE-2026-4224
Details
  • SECURITY UPDATE: Control characters not rejected in Cookie module (HTTP header injection)
    • debian/patches/CVE-2026-0672.patch: add _has_control_character() helper and reject control characters in Morsel.setitem(), Morsel.set() and BaseCookie.output() in Lib/Cookie.py, plus regression tests in Lib/test/test_cookie.py
    • CVE-2026-0672
  • SECURITY UPDATE: Incomplete rejection of control characters in Cookie module
    • debian/patches/CVE-2026-3644.patch: add control character validation to Morsel.update() and Morsel.js_output() in Lib/Cookie.py
    • CVE-2026-3644
  • SECURITY UPDATE: C stack overflow via deeply nested inline DTD content model in pyexpat
    • debian/patches/CVE-2026-4224.patch: add Py_EnterRecursiveCall/Py_LeaveRecursiveCall guards to conv_content_model() in Modules/pyexpat.c to prevent unbounded C recursion when ElementDeclHandler is registered
    • CVE-2026-4224
References

Affected packages

TuxCare:Ubuntu:20.04
idle-python2.7

Package

Name
idle-python2.7
Purl
pkg:deb/tuxcare/idle-python2.7?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
libpython2.7

Package

Name
libpython2.7
Purl
pkg:deb/tuxcare/libpython2.7?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
libpython2.7-dev

Package

Name
libpython2.7-dev
Purl
pkg:deb/tuxcare/libpython2.7-dev?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
libpython2.7-minimal

Package

Name
libpython2.7-minimal
Purl
pkg:deb/tuxcare/libpython2.7-minimal?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
libpython2.7-stdlib

Package

Name
libpython2.7-stdlib
Purl
pkg:deb/tuxcare/libpython2.7-stdlib?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
libpython2.7-testsuite

Package

Name
libpython2.7-testsuite
Purl
pkg:deb/tuxcare/libpython2.7-testsuite?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
python2.7

Package

Name
python2.7
Purl
pkg:deb/tuxcare/python2.7?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
python2.7-dev

Package

Name
python2.7-dev
Purl
pkg:deb/tuxcare/python2.7-dev?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
python2.7-doc

Package

Name
python2.7-doc
Purl
pkg:deb/tuxcare/python2.7-doc?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
python2.7-examples

Package

Name
python2.7-examples
Purl
pkg:deb/tuxcare/python2.7-examples?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"
python2.7-minimal

Package

Name
python2.7-minimal
Purl
pkg:deb/tuxcare/python2.7-minimal?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.7.18-1~20.04.7+tuxcare.els3

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"