CVE-2024-1681: flask-cors — Exploit

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-117 CWE-117

Affected Products

Vendor	Product	Versions
corydolphin	flask-cors	All

References

Exploits

https://huntr.com/bounties/25a7a0ba-9fa2-4777-acb6-03e5539bb644 https://huntr.com/bounties/25a7a0ba-9fa2-4777-acb6-03e5539bb644

Other References

https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html

Frequently Asked Questions

What is CVE-2024-1681? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-1681? +

CVE-2024-1681 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-1681? +

CVE-2024-1681 affects products from corydolphin, specifically: flask-cors. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-1681? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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