CVE-2026-46607 Glances: Insecure Pickle Deserialization in Version Cache Leads to Arbitrary Code Execution
An attacker with local write access can plant a malicious pickle file to achieve arbitrary code execution when Glances starts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46607?
CVE-2026-46607 is a high-severity unsafe deserialization vulnerability in nicolargo glances, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, glances/outdated.py uses pickle.load() to read a version-check cache file stored at a predictable, world-accessible path (~/.cache/glances/glances-version.db or $XDG_CACHE_HOME/glances/glances-version.db). No integrity check, signature verification, or format validation is performed before deserialization. An attacker with write access to that path — through any of several realistic local or container-level scenarios — can plant a malicious pickle file and achieve arbitrary code execution as the OS user running Glances the next time it starts with version checking enabled (the default). This vulnerability is fixed in 4.5.5.
Weakness: CWE-502
Which versions are affected by CVE-2026-46607?
3 open source packages ship an affected version, including glances.
| Package | Affected | Fixed in |
|---|---|---|
glances PyPI | All versions | 4.5.5 |
glances PyPI | All versions | 4.5.5 |
glances PyPI | All versions | 4.5.5 |
How do I fix CVE-2026-46607?
Upgrade glances to 4.5.5 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-46607 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46607 exists.
Sources
Also known as DEBIAN-CVE-2026-46607, GHSA-9837-48hr-q32j, PYSEC-2026-2496, UBUNTU-CVE-2026-46607.