DEBIAN-CVE-2026-42304
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-42304
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42304.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-42304
- Upstream
- Published
- 2026-05-13T21:16:46.933Z
- Modified
- 2026-05-14T09:01:21.269002Z
- 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
-
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.4.0rc2, the twisted.names module is vulnerable to a Denial of Service (DoS) attack via resource exhaustion during DNS name decompression. A remote, unauthenticated attacker can exploit this by sending a crafted TCP DNS packet containing deeply chained compression pointers. This flaw bypasses previous loop-prevention logic, causing the single-threaded Twisted reactor to hang while processing millions of recursive lookups, effectively freezing the server. This vulnerability is fixed in 26.4.0rc2.
- References
Affected packages
Debian:11 / twisted
Package
- Name
- twisted
- Purl
- pkg:deb/debian/twisted?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Affected versions
20.*
20.3.0-7
20.3.0-7+deb11u1
20.3.0-7+deb11u2
22.*
22.1.0-1
22.1.0-2
22.2.0-1
22.4.0-1
22.4.0-2
22.4.0-3
22.4.0-4
23.*
23.10.0-1
23.10.0-2
24.*
24.3.0-1
24.3.0-2
24.3.0-3
24.7.0-1
24.7.0-2
24.7.0-3
24.10.0-1
24.10.0-2
24.11.0-1
25.*
25.5.0-1
25.5.0-2
25.5.0-3
25.5.0-4
25.5.0-5
26.*
26.4.0-1
Debian:12 / twisted
Package
- Name
- twisted
- Purl
- pkg:deb/debian/twisted?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Debian:13 / twisted
Package
- Name
- twisted
- Purl
- pkg:deb/debian/twisted?arch=source
Debian:14 / twisted
Package
- Name
- twisted
- Purl
- pkg:deb/debian/twisted?arch=source