How severe is CVE-2023-41834?

CVE-2023-41834 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-41834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-41834?

CVE-2023-41834 affects Apache Flink Stateful Functions. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-41834?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-41834 published?

CVE-2023-41834 was published on 2023-09-19 and last updated on 2026-06-17.

CVE-2023-41834

CVE-2023-41834 is a medium-severity vulnerability in Apache Flink Stateful Functions with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Apache Flink Stateful Functions
Published: 2023-09-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-41834?: 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.
How severe is CVE-2023-41834?: CVE-2023-41834 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-41834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-41834?: CVE-2023-41834 affects Apache Flink Stateful Functions. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-41834?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-41834 published?: CVE-2023-41834 was published on 2023-09-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:flink_stateful_functions:*:*:*:*:*:*:*:*

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