CVE-2026-18709 (GCVE-0-2026-18709)

Vulnerability from cvelistv5 – Published: 2026-08-11 18:48 – Updated: 2026-08-11 20:19
VLAI
Title
Missing Authorization in MongoDB Sharded Transaction Commit/Abort Handling Leads to Cross-Shard Data Inconsistency
Summary
An issue in MongoDB Server could allow an authenticated user with direct network access to a shard to improperly commit or abort an in-progress prepared transaction, bypassing the intended transaction coordination process. This could result in cross-shard data inconsistency, cluster clock corruption, and violation of transaction atomicity guarantees.
Severity
5.9 (Medium)
CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
6.4 (Medium)
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 20:19 UTC
CWE
Assigner
mongodb CNA under the mitre root
CNA scorecard C 70/100 over 253 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
MongoDB MongoDB Server Affected: 8.3.0 , < 8.3.8 (semver)
Affected: 8.0 , < 8.0.29 (semver)
Affected: 7.0 , < 7.0.40 (semver)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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