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Medium · 6.5 CVE-2026-109954 EUVD-2026-98658GHSA-jq9m-gc39-vm65

Parse Server 9.0.0 before 9.10.2-alpha.5 Transactional Batch Request Write Interference

Published Oct 13, 2026 · Updated Oct 13, 2026 · Assigned by VulnCheck

Description

Parse Server 5.4.0 before 8.6.96 and 9.0.0 before 9.10.2-alpha.5 shares transactional batch state across concurrent requests, letting any client's transactional batch request interfere with other clients' database writes. On PostgreSQL or MongoDB replica sets and sharded clusters, other clients' acknowledged writes are rolled back if the batch fails, and PostgreSQL transactions can remain open indefinitely, causing subsequent writes to fail.

Affected products

VendorProductAffectedFixed
parse-community parse-server 9.0.0 – < 9.10.2-alpha.5, 5.4.0 – < 8.6.96 9.10.2-alpha.5

References