CVE-2026-109954CWE-362

CVE-2026-109954

Medium · published October 13, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
11.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
8.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
EPSS
0.00218 · 11.7th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2026-10-13T18:17Z
References (2)
https://github.com/parse-community/parse-server/security/advisories/GHSA-jhh9-hrgh-c9gv · [email protected]https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.2-alpha.5-transactional-batch-request-write-interference · [email protected]
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 13:27Z
    Parse Server 9.0.0 before 9.10.2-alpha.5 Transactional Batch Request Write Interference
    cvelistv5
  • 13 OCT 13:27Z
    Parse Server 9.0.0 before 9.10.2-alpha.5 Transactional Batch Request Write Interference
    cvelistv5