ALPINE-CVE-2026-70455

Source
https://security.alpinelinux.org/vuln/CVE-2026-70455
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-70455.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-70455
Upstream
Published
2026-08-13T15:19:59.197Z
Modified
2026-09-01T23:30:04.886753604Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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

rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt short alias for --compress-threads, which bypasses the refuse options directive's string matching on long option names. Attackers can specify --zt=N with a large value to spawn an unbounded number of Zstandard worker threads on the receiver, exhausting available thread and memory resources.

References

Affected packages

Alpine:v3.21 / rsync

Package

Name
rsync
Purl
pkg:apk/alpine/rsync?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.4.2
Fixed
3.5.0-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-70455.json"

Alpine:v3.22 / rsync

Package

Name
rsync
Purl
pkg:apk/alpine/rsync?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.4.2
Fixed
3.5.0-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-70455.json"

Alpine:v3.23 / rsync

Package

Name
rsync
Purl
pkg:apk/alpine/rsync?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.4.2
Fixed
3.5.0-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-70455.json"

Alpine:v3.24 / rsync

Package

Name
rsync
Purl
pkg:apk/alpine/rsync?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.4.2
Fixed
3.5.0-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-70455.json"