CVE-2026-48596
Description
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in elixir-tesla tesla allows HTTP header injection via Tesla.Multipart.add_content_type_param/2.
Tesla.Multipart.add_content_type_param/2 appends caller-supplied strings to the multipart content_type_params list without validating for CR (\r) or LF (\n) characters. Tesla.Multipart.headers/1 then joins these params verbatim with "; " to construct the outgoing Content-Type header value. A param containing \r\n splits the header line, allowing arbitrary headers to be injected into the outbound HTTP request. Any application that forwards untrusted input (such as a user-supplied charset or parameter string) into add_content_type_param/2 is affected.
This issue affects tesla: from 0.8.0 before 1.18.3.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
teslaHex | >= 0.8.0, < 1.18.3 | 1.18.3 |
Affected products
2cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*range: >=0.8.0,<1.18.3
- (no CPE)range: >=0.8.0 <1.18.3
Patches
Vulnerability mechanics
References
6- github.com/elixir-tesla/tesla/security/advisories/GHSA-q7jx-v53g-848wnvdExploitVendor AdvisoryWEB
- cna.erlef.org/cves/CVE-2026-48596.htmlnvdThird Party AdvisoryWEB
- github.com/advisories/GHSA-q7jx-v53g-848wghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-48596ghsaADVISORY
- osv.dev/vulnerability/EEF-CVE-2026-48596nvdThird Party AdvisoryWEB
- github.com/elixir-tesla/tesla/commit/23601edac5d22ba9407b427967b5bdbda201aec2nvdBroken LinkWEB
News mentions
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