All vulnerabilities
CVE-2026-109954GHSA-jhh9-hrgh-c9gv

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

parse-community parse-server
Open in ThreatlineRecord JSON
CVSS
8.3High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in9.10.2-alpha.5Also 8.6.96CVE List
Published13 Oct 2026Updated 13 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 4

  • parse-serveraffected: 9.0.0 before 9.10.2-alpha.5CVE List
  • parse-serverunaffected: 9.10.2-alpha.5CVE List
  • parse-serveraffected: 5.4.0 before 8.6.96CVE List
  • parse-serverunaffected: 8.6.96CVE List

References 2