CVE-2026-84971

Summary

Improper handling of an unexpected value size in the decryption path of a client-side encryption library can cause a failed internal check that terminates the process using the library. A party able to place a suitably formed encrypted value where an application will decrypt it, or able to control the responses the application receives, may cause that application to stop running.

Affected Software

VendorProductVersion RangeStatus
MongoDBlibmongocrypt1.7.0 < 1.20.4affected

Weaknesses

  • CWE-617: CWE-617: Reachable Assertion

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References