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TI-2026-35952 Aliases CVE-2026-48596GHSA-q7jx-v53g-848w

CRLF injection in Tesla.Multipart.add_content_type_param/2 allows HTTP header injection

Priority MEDIUM 44CWE-113Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

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.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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00239 15th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed tesla (elixir-tesla): 1.18.3tesla (Hex): 1.18.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
elixir-teslatesla0.8.0 to before 1.18.31.18.3Patch availableCNA
—tesla (Hex)0.8.0 to before 1.18.31.18.3Patch availableGHSA-q7jx-v53g-848w
  • tesla Vendorelixir-tesla Affected 0.8.0 to before 1.18.3 Fixed in 1.18.3 Patch available CNA
  • tesla (Hex) Vendor— Affected 0.8.0 to before 1.18.3 Fixed in 1.18.3 Patch available GHSA-q7jx-v53g-848w

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*0.8.0 to before 1.18.3Vulnerableelixir-tesla
  • cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:* Versions 0.8.0 to before 1.18.3 Vulnerable ·elixir-tesla

Remediation

  • Fix · CNA tesla (elixir-tesla) Fixed in 1.18.3
  • Fix · GHSA-q7jx-v53g-848w tesla (Hex) Fixed in 1.18.3 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    elixir-tesla tesla 1.18.3

    5 records Highest priority Priority HIGH 2 HIGH, 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-35953 Atom table exhaustion via untrusted URL scheme in Tesla.Adapter.MintPriority HIGH 69
    • TI-2026-35951 Authorization header leaks to third-party origin on cross-origin redirect in Tesla.Middleware.FollowRedirectsPriority HIGH 69
    • TI-2026-35954 CRLF injection in Tesla.Multipart disposition parameters allows multipart part header injectionPriority MEDIUM 44
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48596
  2. 2026-10-03 Alias added: GHSA-q7jx-v53g-848w

References

Exploit 1

Patch 1

Advisory 3

Other 2

  • TI-2026-35953 Atom table exhaustion via untrusted URL scheme in Tesla.Adapter.Mint CVSS 4.0HIGH 8.2
  • TI-2026-35951 Authorization header leaks to third-party origin on cross-origin redirect in Tesla.Middleware.FollowRedirects CVSS 4.0HIGH 8.2
  • TI-2026-35954 CRLF injection in Tesla.Multipart disposition parameters allows multipart part header injection CVSS 4.0LOW 2.1
  • TI-2026-35950 Decompression bomb in Tesla.Middleware.DecompressResponse and Tesla.Middleware.Compression CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences