CVE-2025-52479
CVE-2025-52479 is a high-severity vulnerability with a CVSS 4.0 base score of 7.7. 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-93.
Key facts
- Severity: High (CVSS 4.0 base score 7.7)
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-19236
- Weakness: CWE-93
- Published:
- Last modified:
Description
HTTP.jl provides HTTP client and server functionality for Julia, and URIs.jl parses and works with Uniform Resource Identifiers (URIs). URIs.jl prior to version 1.6.0 and HTTP.jl prior to version 1.10.17 allows the construction of URIs containing CR/LF characters. If user input was not otherwise escaped or protected, this can lead to a CRLF injection attack. Users of HTTP.jl should upgrade immediately to HTTP.jl v1.10.17, and users of URIs.jl should upgrade immediately to URIs.jl v1.6.0. The check for valid URIs is now in the URI.jl package, and the latest version of HTTP.jl incorporates that fix. As a workaround, manually validate any URIs before passing them on to functions in this package.
Frequently asked questions
- What is CVE-2025-52479?
- HTTP.jl provides HTTP client and server functionality for Julia, and URIs.jl parses and works with Uniform Resource Identifiers (URIs). URIs.jl prior to version 1.6.0 and HTTP.jl prior to version 1.10.17 allows the construction of URIs containing CR/LF characters. If user input was not otherwise escaped or protected, this can lead to a CRLF injection attack. Users of HTTP.jl should upgrade immediately to HTTP.jl v1.10.17, and users of URIs.jl should upgrade immediately to URIs.jl v1.6.0. The check for valid URIs is now in the URI.jl package, and the latest version of HTTP.jl incorporates that fix. As a workaround, manually validate any URIs before passing them on to functions in this package.
- How severe is CVE-2025-52479?
- CVE-2025-52479 has a CVSS 4.0 base score of 7.7, rated high severity.
- Is CVE-2025-52479 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-52479?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-52479 have an EU (EUVD) identifier?
- Yes. CVE-2025-52479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19236.
- When was CVE-2025-52479 published?
- CVE-2025-52479 was published on 2025-06-25 and last updated on 2026-06-17.
References
- https://github.com/JuliaWeb/HTTP.jl/commit/e124953f388e7750f893fcf90efc72b7a59e35eb
- https://github.com/JuliaWeb/HTTP.jl/security/advisories/GHSA-4g68-4pxg-mw93
- https://github.com/JuliaWeb/URIs.jl/pull/66
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