CVE-2026-109954 Parse Server 9.0.0 before 9.10.2-alpha.5 Transactional Batch Request Write Interference
Concurrent transactional batch requests interfere with other clients' database writes, causing rollbacks or indefinite open transactions in Parse Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-109954?
CVE-2026-109954 is a high-severity vulnerability in parse-community parse-server, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-362
Which versions are affected by CVE-2026-109954?
1 open source package ship an affected version, including parse.
| Package | Affected | Fixed in |
|---|---|---|
parse Bitnami | From 5.4.0 | 8.6.96, 9.10.2 |
How do I fix CVE-2026-109954?
Upgrade parse to a fixed version for your release line: 8.6.96 or 9.10.2.
Is CVE-2026-109954 being exploited?
There is no known exploitation of CVE-2026-109954 in the wild and no public exploit code.
Sources
Also known as BIT-parse-2026-109954, GHSA-jhh9-hrgh-c9gv, GHSA-jq9m-gc39-vm65.