CVE-2026-48596: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in

This week

LOW 3.7REMOTEUPGRADE

CVE-2026-48596 is a low-severity flaw (CVSS 3.7) affecting tesla. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 con

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-113
Published	2026-06-02
Last modified	2026-09-24

Publisher (CNA): EEF · Vendor: elixir-tesla

Last updated 2026-09-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-02 20:16 UTCPublished CVE record published
2026-09-24 21:17 UTCUpdated Record last modified

elixir-tesla tesla UPGRADE

Affected: >= 0.8.0 and < 1.18.3

Fixed in: 1.18.3

Safe to downgrade to: a release before 0.8.0

1. Check installed version

apt-cache policy tesla || rpm -q tesla || tesla --version

2. UPGRADE to 1.18.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tesla

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tesla

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.8.0 (Debian / Ubuntu)

apt-cache madison tesla sudo apt install tesla=<VERSION_BEFORE_0.8.0> sudo apt-mark hold tesla

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tesla sudo dnf downgrade tesla-<VERSION_BEFORE_0.8.0> sudo dnf versionlock add tesla

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-48596?

tesla: upgrade to 1.18.3. Exact commands for each OS are on this page.

Is CVE-2026-48596 being exploited?

CVE-2026-48596 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-48596 affect?

CVE-2026-48596 affects tesla. Severity is low (CVSS 3.7). 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_p

How urgent is CVE-2026-48596?

Priority 27/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Tesla and automotive vulnerabilities

Related CVEs

CVE-2026-48598 LOW 3.7 UPGRADE Improper Encoding or Escaping of Output vulnerability in elixir-tesla tesla allows multipart part header injec
CVE-2026-48597 MEDIUM 5.9 UPGRADE Allocation of Resources Without Limits or Throttling vulnerability in elixir-tesla tesla allows denial of serv
CVE-2026-48595 MEDIUM 5.9 UPGRADE Improper Handling of Case Sensitivity vulnerability in elixir-tesla tesla allows credential leakage to a third
CVE-2026-48594 HIGH 7.5 UPGRADE Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-tesla tesla allows a

References

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