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Medium 6.0Published Oct 25, 2026

CVE-2026-116161Parse Server 9.0.0 before 9.10.5-alpha.4 LiveQuery Information Disclosure via $or Subscriptions

Updated under an hour ago ()

Does this affect you?

It affects parse-community parse-server. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
6.0 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness (CWE)
CWE-200
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
VulnCheck
NVD analysis
Awaiting Analysis
Record last updated
Oct 25, 2026
First seen by InfoSec Signals
Oct 25, 2026

Affected products

Affected products
parse-community parse-server
parse_community:parse_server (from the name)
from 9.0.0 before 9.10.5-alpha.4; 9.10.5-alpha.4 not affected
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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