VM crash via unbounded URL-scheme atom creation
Published Jun 2, 2026 · Updated Jun 2, 2026
Resource exhaustion in the Mint adapter in Tesla 1.3.0 through 1.18.2 allows attackers to crash the BEAM VM via crafted URL schemes. Tesla.Adapter.Mint.open_conn/2 passes every parsed scheme to String.to_atom/1 without an allowlist, permanently interning each novel value. Reachability requires untrusted request URLs or an attacker-controlled redirect when FollowRedirects is enabled; exhausting the bounded atom table terminates the application VM.
Summary
What happened
Resource exhaustion in the Mint adapter in Tesla 1.3.0 through 1.18.2 allows attackers to crash the BEAM VM via crafted URL schemes. Tesla.Adapter.Mint.open_conn/2 passes every parsed scheme to String.to_atom/1 without an allowlist, permanently interning each novel value. Reachability requires untrusted request URLs or an attacker-controlled redirect when FollowRedirects is enabled; exhausting the bounded atom table terminates the application VM.
The record
- CVE
- CVE-2026-48597
- Published
- Jun 2, 2026
- Updated
- Jun 2, 2026
- Vendor
- Elixir Tesla
- Product
- Tesla
- Classifications
- CWE-770, T1499.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 2, 2026CVE publishedPublication date reported by the CVE source.
- Jun 2, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.3.0 <1.18.3
- Affected versionversion=ccd0823d4ba37581a37d8f6108f9a81b263237ef <4699c3cb3e2fd6078f99f45f11cf7466aeedbf0e
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Upstream atom-exhaustion proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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