DEBIAN-CVE-2026-55244
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-55244
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55244.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-55244
- Upstream
- Published
- 2026-09-14T20:16:47Z
- Modified
- 2026-09-17T08:47:36Z
- Severity
-
- 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
ASTEVAL is an evaluator of Python expressions and statements. Prior to 1.0.9, FROM_PY in asteval/astutils.py exposes BaseException, SystemExit, KeyboardInterrupt, and GeneratorExit to expressions evaluated by asteval.Interpreter.eval(), while run() and eval() in asteval/asteval.py catch Exception rather than these non-Exception BaseException subclasses. When an attacker-controlled expression raises one of these classes, on_raise() passes the class to raise_exception(), and the resulting exception bypasses the interpreter's safety handlers and propagates into the calling application. A consuming service that evaluates untrusted expressions can therefore be terminated or have signal and cleanup handling disrupted, causing denial of service. The separately documented read-only open() capability is not part of this vulnerability. This issue is fixed in version 1.0.9.
- References
Affected packages
Debian:12 / python-asteval
Package
- Name
- python-asteval
- Purl
- pkg:deb/debian/python-asteval?arch=source&distro=bookworm
Debian:13 / python-asteval
Package
- Name
- python-asteval
- Purl
- pkg:deb/debian/python-asteval?arch=source&distro=trixie
Debian:14 / python-asteval
Package
- Name
- python-asteval
- Purl
- pkg:deb/debian/python-asteval?arch=source&distro=forky