DEBIAN-CVE-2026-59885

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Source
https://security-tracker.debian.org/tracker/CVE-2026-59885
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59885.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-59885
Upstream
Published
2026-07-14T17:17:14Z
Modified
2026-09-12T10:00:32Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER, CER, and DER decoders process OBJECT IDENTIFIER and RELATIVE-OID values in quadratic time relative to the number of arcs, so a small crafted payload containing an OID with many arcs consumes excessive CPU per decode() call and can deny service to applications that decode untrusted ASN.1 data. The corresponding encoders have the same quadratic behavior when an application re-encodes previously decoded attacker-supplied values. This issue is fixed in version 0.6.4.

References

Affected packages

Debian:12 / pyasn1

Package

Name
pyasn1
Purl
pkg:deb/debian/pyasn1?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.4.8-3+deb12u3

Affected versions

0.*
0.4.8-3
0.4.8-3+deb12u1
0.4.8-3+deb12u2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59885.json"

Debian:13 / pyasn1

Package

Name
pyasn1
Purl
pkg:deb/debian/pyasn1?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.1-1+deb13u3

Affected versions

0.*
0.6.1-1
0.6.1-1+deb13u1
0.6.1-1+deb13u2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59885.json"

Debian:14 / pyasn1

Package

Name
pyasn1
Purl
pkg:deb/debian/pyasn1?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.4-1

Affected versions

0.*
0.6.1-1
0.6.2-1~bpo13+1
0.6.2-1
0.6.3-1
0.6.4-1~bpo13+1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59885.json"