CVE-2023-41834

Name: CVE-2023-41834
Creator: NVD / NIST
Published: 2023-09-19T13:16:22.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.61%

Last modified Jun 17, 2026

CVE-2023-41834 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Improper Neutralization of CRLF Sequences in HTTP Headers in Apache Flink Stateful Functions 3.1.0, 3.1.1 and 3.2.0 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via crafted HTTP requests. Attackers could potentially inject malicious content into the HTTP response that is sent to the user's browser. Users should upgrade to Apache Flink Stateful Functions version 3.3.0.. EPSS estimates a 1.61% chance of exploitation in the next 30 days.

Description

Improper Neutralization of CRLF Sequences in HTTP Headers in Apache Flink Stateful Functions 3.1.0, 3.1.1 and 3.2.0 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via crafted HTTP requests. Attackers could potentially inject malicious content into the HTTP response that is sent to the user's browser. Users should upgrade to Apache Flink Stateful Functions version 3.3.0.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.61%

72.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apache	Flink Stateful Functions	>= 3.1.0, <= 3.2.0

References

http://www.openwall.com/lists/oss-security/2023/09/19/3Mailing List, Third Party Advisory
https://lists.apache.org/thread/cvxcsdyjqc3lysj1tz7s06zwm36zvwrmMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2023/09/19/3Mailing List, Third Party Advisory
https://lists.apache.org/thread/cvxcsdyjqc3lysj1tz7s06zwm36zvwrmMailing List, Vendor Advisory

Timeline

Published: Sep 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-41834?

How severe is CVE-2023-41834?

CVE-2023-41834 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.61% probability of exploitation in the next 30 days.

How do I fix CVE-2023-41834?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-41834?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST