Unauthenticated Remote Code Execution in ElasticRendezvousHandler in horovod/horovod
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
Horovod versions up to and including v0.28.1 are vulnerable to unauthenticated remote code execution. The vulnerability is due to improper handling of base64-encoded data in the `ElasticRendezvousHandler`, a subclass of `KVStoreHandler`. Specifically, the `_put_value` method in `ElasticRendezvousHandler` calls `codec.loads_base64(value)`, which eventually invokes `cloudpickle.loads(decoded)`. This allows an attacker to send a malicious pickle object via a PUT request, leading to arbitrary code execution on the server.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| horovod | horovod/horovod | up to latest | — | No fix listed | CNA |
| — | horovod (PyPI) | up to 0.28.1 | — | No fix listed | GHSA-mrhh-3ggq-23p2 |
- horovod/horovod Vendorhorovod Affected up to latest Fixed in — No fix listed CNA
- horovod (PyPI) Vendor— Affected up to 0.28.1 Fixed in — No fix listed GHSA-mrhh-3ggq-23p2
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-10190
- 2026-10-03 Alias added: GHSA-mrhh-3ggq-23p2
References
More Horovod vulnerabilities
- TI-2022-00244 Insecure Temporary File in horovod/horovod CVSS 3.1HIGH 7.5
Sources
- CVE-2024-10190 · CVE Program
- CVE-2024-10190 · NVD
- FIRST EPSS
- GHSA-mrhh-3ggq-23p2 · GitHub Advisory Database · CC BY 4.0
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