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CVE-2023-41834

17
FAUCET Score

CVE-2023-41834 is a medium-severity vulnerability affecting Apache Flink Stateful Functions versions 3.1.0, 3.1.1, and 3.2.0. It allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks due to improper neutralization of CRLF sequences in HTTP headers. This could lead to malicious content being injected into a user's browser. The vulnerability has a CVSS score of 6.1 (Medium) and is rated with a FAUCET Risk Score of 34/100. It can be exploited over the network with low attack complexity, requiring user interaction, and could result in low impact to confidentiality and integrity. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. The vulnerability has also received minimal community discussion or media coverage. Users are advised to upgrade to Apache Flink Stateful Functions version 3.3.0 to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.1.0, <= 3.2.0CPE matchmatch criteria
cpe:2.3:a:apache:flink_stateful_functions:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.61%
Probability of exploitation in next 30 days
EPSS Percentile
73.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0161 is in the 86th percentile among its peer group of 26,219 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.apache.org / thread/cvxcsdyjqc3lysj1tz7s06zwm36zvwrm
Mailing ListVendor Advisory
openwall.com / lists/oss-security/2023/09/19/3
Mailing ListThird Party Advisory