vulnerability
Arch Linux: Arbitrary code execution (CVE-2021-33026)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | May 13, 2021 | Jul 11, 2025 | Apr 20, 2026 |
Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
May 13, 2021
Added
Jul 11, 2025
Modified
Apr 20, 2026
Description
The Flask-Caching extension through 1.10.1 for Flask relies on Pickle for serialization, which may lead to remote code execution or local privilege escalation. If an attacker gains access to cache storage (e.g., filesystem, Memcached, Redis, etc.), they can construct a crafted payload, poison the cache, and execute Python code.
Solution
arch-linux-upgrade-latest
Rapid7 Labs
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