JuliaWeb HTTP.jl up to 1.10.18 HTTP Response response splitting

Summaryinfo

A vulnerability identified as problematic has been detected in JuliaWeb HTTP.jl up to 1.10.18. Affected by this vulnerability is an unknown functionality of the component HTTP Response Handler. Performing a manipulation results in response splitting. This vulnerability is reported as CVE-2025-61689. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in JuliaWeb HTTP.jl up to 1.10.18. This affects some unknown functionality of the component HTTP Response Handler. The manipulation with an unknown input leads to a response splitting vulnerability. CWE is classifying the issue as CWE-113. The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers. This is going to have an impact on integrity. The summary by CVE is:

HTTP.jl is an HTTP client and server functionality for the Julia programming language. Prior to version 1.10.19, HTTP.jl did not validate header names/values for illegal characters, allowing CRLF-based header injection and response splitting. This enables HTTP response splitting and header injection, leading to cache poisoning, XSS, session fixation, and more. This issue is fixed in HTTP.jl `v1.10.19`.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-61689 since 09/29/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.10.19 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Vendor

• JuliaWeb

Name

• HTTP.jl

Version

• 1.10.0
• 1.10.1
• 1.10.2
• 1.10.3
• 1.10.4
• 1.10.5
• 1.10.6
• 1.10.7
• 1.10.8
• 1.10.9
• 1.10.10
• 1.10.11
• 1.10.12
• 1.10.13
• 1.10.14
• 1.10.15
• 1.10.16
• 1.10.17
• 1.10.18

Website

• Product: https://github.com/JuliaWeb/HTTP.jl/

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