How severe is CVE-2023-26142?

CVE-2023-26142 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-26142 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26142?

CVE-2023-26142 affects Crowcpp Crow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26142?

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

When was CVE-2023-26142 published?

CVE-2023-26142 was published on 2023-09-12 and last updated on 2026-06-17.

CVE-2023-26142

CVE-2023-26142 is a medium-severity vulnerability in Crowcpp Crow with a CVSS 3.x base score of 6.5. 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 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Crowcpp Crow
Published: 2023-09-12
Last modified: 2026-06-17

Description

All versions of the package crow are vulnerable to HTTP Response Splitting when untrusted user input is used to build header values. Header values are not properly sanitized against CRLF Injection in the set_header and add_header functions. An attacker can add the \r\n (carriage return line feeds) characters to end the HTTP response headers and inject malicious content.

Frequently asked questions

What is CVE-2023-26142?: All versions of the package crow are vulnerable to HTTP Response Splitting when untrusted user input is used to build header values. Header values are not properly sanitized against CRLF Injection in the set_header and add_header functions. An attacker can add the \r\n (carriage return line feeds) characters to end the HTTP response headers and inject malicious content.
How severe is CVE-2023-26142?: CVE-2023-26142 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-26142 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26142?: CVE-2023-26142 affects Crowcpp Crow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26142?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-26142 published?: CVE-2023-26142 was published on 2023-09-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:crowcpp:crow:1.0\+5:*:*:*:*:*:*:*

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