CVE-2024-1681

Publication date 19 April 2024

Last updated 3 July 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
python-flask-cors	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Fixed 4.0.0-1ubuntu0.1~esm1
	23.10 mantic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 3.0.9-2ubuntu0.1
	20.04 LTS focal	Fixed 3.0.8-2ubuntu0.1+esm1

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Notes

sbeattie

seems unfixed upstream as of 2024-04-21

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
python-flask-cors	Upstream: 6172c20

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-7612-1
Flask-CORS vulnerabilities
2 July 2025