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Vulnerabilities

Vulnerability · CVE-2026-13055

The aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod).

Published Jul 22, 2026 · catalog updated Oct 24, 2026 · The aggregation expression can

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-13055. EPSS is 0.40%. Act only if a listed version of The aggregation expression can is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The aggregation expression can).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.40%
Remediation
Version ranges on file
Affected products
cpe mongodb/mongodb

The aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, triggering an internal consistency check that aborts the server process. The user must be able to run an aggregation pipeline.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mongodb/mongodb< 7.0.39
  • cpe mongodb/mongodb< 8.0.28
  • cpe mongodb/mongodb< 8.2.12
  • cpe mongodb/mongodb< 8.3.7

How to fix CVE-2026-13055

  • Upgrade

    CVE-2026-13055 lists a fix boundary at 7.0.39. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 7.0.39

  • Advisory

    Open the inventory_high record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-13055. EPSS is 0.40%. Act only if a listed version of The aggregation expression can is installed.

Which versions are affected?

Compare what you have installed with < 7.0.39, < 8.0.28, < 8.2.12, < 8.3.7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-617. EPSS 0.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

MongoDB security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 22, 2026 · Monitored products — high

    Detected

    The aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, triggering an internal consistency check that aborts the server process. The user must be able to run an aggregation pipeline.

  2. Oct 24, 2026 · Monitored products — high

    Updated

    The aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, triggering an internal consistency check that aborts the server process. The user must be able to run an aggregation pipeline.

Sources

  • Monitored products — highVendor advisoryCVE-2026-13055

    The aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, triggering an internal consistency check that aborts the server process. The user must be able to run an aggregation pipeline.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Monitored products — highNov 1, 2026