GHSA-84pr-m4jr-85g5
flask-cors vulnerable to log injection when the log level is set to debug
At a glance
- Published
- Updated
- CVE
- CVE-2024-1681
- Aliases
- PYSEC-2024-271
- CVSS_V3
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Description
corydolphin/flask-cors is vulnerable to log injection when the log level is set to debug. An attacker can inject fake log entries into the log file by sending a specially crafted GET request containing a CRLF sequence in the request path. This vulnerability allows attackers to corrupt log files, potentially covering tracks of other attacks, confusing log post-processing tools, and forging log entries. The issue is due to improper output neutralization for logs.
Affected packages
| Package | Versions |
|---|---|
| PyPI · flask-cors | introduced 0, fixed 4.0.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-1681 ADVISORY
- https://github.com/corydolphin/flask-cors PACKAGE
- https://github.com/corydolphin/flask-cors/blob/40acc8092332dfed4bb54d7a4f89a6d479466de7/flask_cors/extension.py#L194 WEB
- https://github.com/pypa/advisory-database/tree/main/vulns/flask-cors/PYSEC-2024-271.yaml WEB
- https://huntr.com/bounties/25a7a0ba-9fa2-4777-acb6-03e5539bb644 WEB
- https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |