EEF-CVE-2026-48596

Source
https://cna.erlef.org/osv/EEF-CVE-2026-48596.html
Import Source
https://cna.erlef.org/osv/EEF-CVE-2026-48596.json
JSON Data
https://api.test.osv.dev/v1/vulns/EEF-CVE-2026-48596
Aliases
Published
2026-06-02T19:09:31.615Z
Modified
2026-06-04T04:45:42.210Z
Severity
  • 2.1 (Low) CVSS_V4 - 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 CVSS Calculator
Summary
CRLF injection in Tesla.Multipart.add_content_type_param/2 allows HTTP header injection
Details

Summary

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in elixir-tesla tesla allows HTTP header injection via Tesla.Multipart.addcontenttype_param/2.

Tesla.Multipart.addcontenttypeparam/2 appends caller-supplied strings to the multipart contenttypeparams 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 addcontenttypeparam/2 is affected.

This issue affects tesla: from 0.8.0 before 1.18.3.

Workaround

Validate content-type parameter strings before passing them to Tesla.Multipart.addcontenttype_param/2, rejecting any value that contains \r or \n.

Configuration

The application must pass untrusted input into Tesla.Multipart.addcontenttype_param/2.

Database specific
{
    "capec_ids": [
        "CAPEC-105"
    ],
    "cpe_ids": [
        "cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*"
    ],
    "cwe_ids": [
        "CWE-113"
    ]
}
References
Credits
    • Peter Ullrich - FINDER
    • Yordis Prieto - REMEDIATION_DEVELOPER
    • Jonatan Männchen - ANALYST

Affected packages

Hex / tesla

Package

Name
tesla
Purl
pkg:hex/tesla

Affected ranges

Type
SEMVER
Events
Introduced
0.8.0
Fixed
1.18.3

Affected versions

0.*
0.8.0
0.9.0
0.10.0
1.*
1.0.0-beta.1
1.0.0
1.1.0
1.2.0
1.2.1
1.3.0
1.3.1
1.3.2
1.3.3
1.4.0
1.4.1
1.4.2
1.4.3
1.4.4
1.5.0
1.5.1
1.6.0
1.6.1
1.7.0
1.8.0
1.8.1
1.9.0
1.10.0
1.10.1
1.10.2
1.10.3
1.11.0
1.11.1
1.11.2
1.12.0
1.12.1
1.12.2
1.12.3
1.13.0
1.13.1
1.13.2
1.14.0
1.14.1
1.14.2
1.14.3
1.15.0
1.15.1
1.15.2
1.15.3
1.16.0
1.17.0
1.18.0
1.18.1
1.18.2

Database specific

source
"https://cna.erlef.org/osv/EEF-CVE-2026-48596.json"

Git / github.com/elixir-tesla/tesla.git

Affected ranges

Type
GIT
Repo
https://github.com/elixir-tesla/tesla.git
Events

Database specific

source
"https://cna.erlef.org/osv/EEF-CVE-2026-48596.json"