CVE-2025-61689: HTTP.jl vulnerable to Header injection/Response splitting via header construction.

Severity: high (CVSS 8.7 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-10 · updated 2026-10-11
Weakness: CWE-113

Description

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`.

Affected products

JuliaWeb HTTP.jl: before 1.10.19

References

https://github.com/JuliaWeb/HTTP.jl/releases/tag/v1.10.19
https://github.com/JuliaWeb/HTTP.jl/security/advisories/GHSA-h3x8-ppwj-6vcj

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