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CVE-2026-55206

🗓️ 08 Jul 2026 21:16:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 2 Views

Before 1.1.3, py7zr used an O(n^2) pattern for attacker-controlled streams in PackInfo.read, causing high CPU during initialization.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
CVE-2026-55206
8 Jul 202620:32
attackerkb
circl
CVE-2026-55206
19 Jun 202609:32
circl
cve
CVE-2026-55206
8 Jul 202620:32
cve
cvelist
CVE-2026-55206 py7zr: O(n^2) algorithmic complexity DoS in PackInfo._read()
8 Jul 202620:32
cvelist
debiancve
CVE-2026-55206
8 Jul 202620:32
debiancve
euvd
EUVD-2026-42397
8 Jul 202620:32
euvd
github
py7zr: O(n^2) algorithmic complexity DoS in PackInfo._read()
19 Jun 202621:16
github
nvd
CVE-2026-55206
8 Jul 202621:16
nvd
nessus
openSUSE 16 Security Update : python-py7zr (openSUSE-SU-2026:21159-1)
1 Jul 202600:00
nessus
nessus
Linux Distros Unpatched Vulnerability : CVE-2026-55206
10 Jul 202600:00
nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu22.04allpy7zr0py7zr_0_all.deb
Ubuntu24.04allpy7zr0py7zr_0_all.deb
Ubuntu26.04allpy7zr0py7zr_0_all.deb

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16 Jul 2026 10:55Current
6.1Medium risk
Vulners AI Score6.1
CVSS 48.7
EPSS0.00321
SSVC
2