CVE-2025-29904
CVE-2025-29904 is a medium-severity vulnerability in Jetbrains Ktor with a CVSS 3.x base score of 5.3. 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-444.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (22nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-7894
- Weakness: CWE-444
- Affected product: Jetbrains Ktor
- Published:
- Last modified:
Description
In JetBrains Ktor before 3.1.1 an HTTP Request Smuggling was possible
Frequently asked questions
- What is CVE-2025-29904?
- In JetBrains Ktor before 3.1.1 an HTTP Request Smuggling was possible
- How severe is CVE-2025-29904?
- CVE-2025-29904 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2025-29904 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-29904?
- CVE-2025-29904 affects Jetbrains Ktor. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-29904?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-29904 have an EU (EUVD) identifier?
- Yes. CVE-2025-29904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7894.
- When was CVE-2025-29904 published?
- CVE-2025-29904 was published on 2025-03-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jetbrains:ktor:*:*:*:*:*:*:*:*
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