CVE-2021-33026
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.8epss 7.3%
from disclosure to weapon176 days
Published on NVDMay 13
1st PoC+176d
exploitation probability
7.3%top 6% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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. NOTE: a third party indicates that exploitation is extremely unlikely unless the machine is already compromised; in other cases, the attacker would be unable to write their payload to the cache and generate the required collision
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/apublic PoCs found — 2
githubgithub.com/CarlosG13/CVE-2021-33026★ 4githubgithub.com/Agilevatester/FlaskCache_CVE-2021-33026_POC★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.