Medium severity · published Oct 25, 2026
CVE-2026-116161
Parse Server 9.0.0 before 9.10.5-alpha.4 LiveQuery Information Disclosure via $or Subscriptions
New
6.0
CVSS
0.3%
EPSS
No
On KEV
Description
Parse Server before 8.6.103 and 9.0.0 before 9.10.5-alpha.4 contains an information disclosure vulnerability in LiveQuery. Its subscription hash omits constraints next to a $or operator, including the _Session owner filter and beforeSubscribe constraints, so distinct subscriptions are grouped together. Authenticated clients subscribing with $or queries can receive other users' events, including session tokens usable for impersonation.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
parse-server · parse-community
9.0.0 before 9.10.5-alpha.4; before 8.6.103 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116161
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116161
github.com
https://github.com/parse-community/parse-server/security/advisories/GHSA-349r-988w-x3jp
www.vulncheck.com
https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.5-alpha.4-livequery-information-disclosure-via-or-subscriptions
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