elixir-tesla up to 1.18.2 escape output

Summaryinfo

A vulnerability labeled as problematic has been found in elixir-tesla tesla up to 1.18.2. Affected is an unknown function. The manipulation results in escape output. This vulnerability is known as CVE-2026-48598. Attacking locally is a requirement. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in elixir-tesla tesla up to 1.18.2. It has been classified as problematic. Affected is an unknown part. The manipulation with an unknown input leads to a escape output vulnerability. CWE is classifying the issue as CWE-116. The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved. This is going to have an impact on integrity. CVE summarizes:

Improper Encoding or Escaping of Output vulnerability in elixir-tesla tesla allows multipart part header injection via unescaped Content-Disposition parameter values. Tesla.Multipart.part_headers_for_disposition/1 interpolates each disposition parameter as #{k}="#{v}" with no validation of CR (\r), LF (\n), or double-quote characters. The values come verbatim from the caller via Tesla.Multipart.add_field/4 (the name parameter), Tesla.Multipart.add_file/3, and Tesla.Multipart.add_file_content/4 (both the filename parameter and other disposition opts). A " in the value closes the quoted parameter early; a \r\n ends the Content-Disposition header line and starts a new part header (such as a forged Content-Type), or, after a second \r\n, ends the entire part header block and prepends bytes to the part body. The default-filename path in add_file/3 derives the filename via Path.basename/1, which does not strip CR or LF, so any application forwarding a partially-attacker-controlled file path inherits the same issue. This issue affects tesla: from 0.8.0 before 1.18.3.

The weakness was published by Peter Ullrich and Jonatan Männchen as GHSA-28jh-g32x-v9v4. The advisory is available at github.com. This vulnerability is traded as CVE-2026-48598 since 05/22/2026. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 1.18.3 eliminates this vulnerability. Applying the patch bb1a2c3da2775924d96e3db8e315dcc4d5d2246e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Vehicle Software

Vendor

• elixir-tesla

Name

• tesla

Version

• 1.18.0
• 1.18.1
• 1.18.2

License

• open-source

Website

• Product: https://github.com/elixir-tesla/tesla/

CPE 2.3info

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CPE 2.2info

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