CVE-2025-1211
CVE-2025-1211 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-918.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 2.9
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-2081
- Weakness: CWE-918
- Published:
- Last modified:
Description
Versions of the package hackney before 1.21.0 are vulnerable to Server-side Request Forgery (SSRF) due to improper parsing of URLs by URI built-in module and hackey. Given the URL http://[email protected]/, the URI function will parse and see the host as 127.0.0.1 (which is correct), and hackney will refer the host as 127.2.2.2/. This vulnerability can be exploited when users rely on the URL function for host checking.
Frequently asked questions
- What is CVE-2025-1211?
- Versions of the package hackney before 1.21.0 are vulnerable to Server-side Request Forgery (SSRF) due to improper parsing of URLs by URI built-in module and hackey. Given the URL http://[email protected]/, the URI function will parse and see the host as 127.0.0.1 (which is correct), and hackney will refer the host as 127.2.2.2/. This vulnerability can be exploited when users rely on the URL function for host checking.
- How severe is CVE-2025-1211?
- CVE-2025-1211 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2025-1211 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-1211?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-1211 have an EU (EUVD) identifier?
- Yes. CVE-2025-1211 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2081.
- When was CVE-2025-1211 published?
- CVE-2025-1211 was published on 2025-02-11 and last updated on 2026-06-17.
References
- https://gist.github.com/snoopysecurity/996de09ec0cfd0ebdcfdda8ff515deb1
- https://github.com/benoitc/hackney/commit/9594ce58fabd32cd897fc28fae937694515a3d4a
- https://security.snyk.io/vuln/SNYK-HEX-HACKNEY-6516131
- https://www.blackhat.com/docs/us-17/thursday/us-17-Tsai-A-New-Era-Of-SSRF-Exploiting-URL-Parser-In-Trending-Programming-Languages.pdf
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