CVSS 4.0
2.9 lowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:L/E:PCVE-2025-1211
Low (2.9). EPSS 0.5% chance of exploitation in the next 30 days.
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.
Severity
CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
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
- https://gist.github.com/snoopysecurity/996de09ec0cfd0ebdcfdda8ff515deb1