CVE-2025-1211
mediumpriority · track · 0EPSS 0.005 · 44 %ileEUUSEPSS · scored 2026-10-27
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://127.0.0.1?@127.2.2.2/, 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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.7–6.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-vq52-99r9-h5pwServer-side Request Forgery (SSRF) in hackney2025-02-11ghsa · osvUS
Versions of the package hackney from 0.0.0 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://127.0.0.1?@127.2.2.2/, 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.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-1211cnnvd
- https://gist.github.com/snoopysecurity/996de09ec0cfd0ebdcfdda8ff515deb1cnnvd
- https://github.com/benoitc/hackney/commit/9594ce58fabd32cd897fc28fae937694515a3d4acnnvd
- https://security.snyk.io/vuln/SNYK-HEX-HACKNEY-6516131cnnvd
- https://www.blackhat.com/docs/us-17/thursday/us-17-Tsai-A-New-Era-Of-SSRF-Exploiting-URL-Parser-In-Trending-Programming-Languages.pdfcnnvd
- https://gist.github.com/snoopysecurity/996de09ec0cfd0ebdcfdda8ff515deb1enisa_euvd
- https://github.com/benoitc/hackney/commit/9594ce58fabd32cd897fc28fae937694515a3d4aenisa_euvd
- https://security.snyk.io/vuln/SNYK-HEX-HACKNEY-6516131enisa_euvd
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