DEBIAN-CVE-2026-59980
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-59980
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59980.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-59980
- Upstream
- Published
- 2026-09-23T23:17:11Z
- Modified
- 2026-09-25T08:47:23Z
- Severity
-
- 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/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
-
hpack is an HTTP/2 Header Encoding for Python. Prior to version 4.2.0, unbounded variable integer decoding can cause run-away computation on malformed input leading to O(n^2) runtime, effectively blocking further processing with large enough unsanitized input. A fix is available in python-hyper/hpack v4.2.0 to restricted variable integer decoding to uint32 to prevent run-away computation. As a workaround, sanitize input to hpack decoder for long sequences of
0xFFvalues to prevent malicious use. - References
Affected packages
Debian:12 / python-hpack
Package
- Name
- python-hpack
- Purl
- pkg:deb/debian/python-hpack?arch=source&distro=bookworm
Debian:13 / python-hpack
Package
- Name
- python-hpack
- Purl
- pkg:deb/debian/python-hpack?arch=source&distro=trixie
Debian:14 / python-hpack
Package
- Name
- python-hpack
- Purl
- pkg:deb/debian/python-hpack?arch=source&distro=forky