How severe is CVE-2023-26138?

CVE-2023-26138 has a CVSS 3.x base score of 5.4, 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-2023-26138 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26138?

CVE-2023-26138 affects Drogon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26138?

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

When was CVE-2023-26138 published?

CVE-2023-26138 was published on 2023-07-06 and last updated on 2026-06-17.

CVE-2023-26138

CVE-2023-26138 is a medium-severity vulnerability in Drogon with a CVSS 3.x base score of 5.4. 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 5.4)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Drogon
Published: 2023-07-06
Last modified: 2026-06-17

Description

All versions of the package drogonframework/drogon are vulnerable to CRLF Injection when untrusted user input is used to set request headers in the addHeader function. An attacker can add the \r\n (carriage return line feeds) characters and inject additional headers in the request sent.

Frequently asked questions

What is CVE-2023-26138?: All versions of the package drogonframework/drogon are vulnerable to CRLF Injection when untrusted user input is used to set request headers in the addHeader function. An attacker can add the \r\n (carriage return line feeds) characters and inject additional headers in the request sent.
How severe is CVE-2023-26138?: CVE-2023-26138 has a CVSS 3.x base score of 5.4, 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-2023-26138 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26138?: CVE-2023-26138 affects Drogon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26138?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-26138 published?: CVE-2023-26138 was published on 2023-07-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:drogon:drogon:*:*:*:*:*:*:*:*

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