CVE-2026-48596

LOW EPSS 6.7%
Published Jun 2, 20263w ago · Modified Jun 17, 20261w ago
2.1 CVSS 4.0
Low
Find Similar
Published Jun 2, 2026 3w ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
2.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
6.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-113

References 4

  • cna.erlef.org https://cna.erlef.org/cves/CVE-2026-48596.html
  • github.com https://github.com/elixir-tesla/tesla/commit/23601edac5d22ba9407b427967b5bdbda201aec2
  • github.com https://github.com/elixir-tesla/tesla/security/advisories/GHSA-q7jx-v53g-848w
  • osv.dev https://osv.dev/vulnerability/EEF-CVE-2026-48596

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.