Medium severity · published Oct 26, 2026
CVE-2026-116801
Parse Server 9.0.0 before 9.10.5-alpha.6 ACL Bypass via $relatedTo Query
New
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
Parse Server before 8.6.105 and 9.0.0 before 9.10.5-alpha.6 does not validate the owning object reference in $relatedTo relation queries, so supplying a query operator instead of an object ID bypasses the owning-object ACL check. A client with read access to at least one object of the owning class can disclose which readable objects are linked to owning objects it cannot read.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% 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.6; before 8.6.105 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116801
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116801
github.com
https://github.com/parse-community/parse-server/security/advisories/GHSA-58m4-cqvw-4vgh
www.vulncheck.com
https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.5-alpha.6-acl-bypass-via-relatedto-query
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