CVE-2023-41834
Apache Flink Stateful Functions allowed HTTP header injection due to Improper Neutralization of CRLF Sequences
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2023-41834- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-74, CWE-113
- Updated
- 2026-11-02
CVE List No score
Apache Flink Stateful Functions allowed HTTP header injection due to Improper Neutralization of CRLF Sequences
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.
- Record
CVE-2023-41834- Weakness
- CWE-113, CWE-74
- Updated
- 2026-11-02
EUVDEUVD-2023-46326
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.
- Record
EUVD-2023-46326- CVSS
- 0.0 None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v965-25gx-6h45
Improper Neutralization of CRLF Sequences in HTTP Headers in Apache Flink Stateful Functions 3.1...
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.
- Record
GHSA-v965-25gx-6h45- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-74, CWE-113
- Updated
- 2026-11-02
OSV No score
Apache Flink Stateful Functions allowed HTTP header injection due to Improper Neutralization of CRLF Sequences
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.
- Record
CVE-2023-41834- Weakness
- CWE-113, CWE-74
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-41834 is a medium vulnerability (CVSS 6.1) in Apache Flink Stateful Functions, published September 19, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.31%, the 83rd percentile. No source names a fixed version.