CVE-2026-119125: Parse Server before 8.6.107 and 9.0.0 before 9.10.5-alpha.8 Information Disclosure via beforeSave Reverted Fields
Parse Server before 8.6.107 and 9.0.0 before 9.10.5-alpha.8 returns the stored value of a field reverted by a beforeSave trigger in object update responses, even to clients without read access to that object or field. An authenticated client able to update an object whose beforeSave trigger reverts a field, via revert() or a constant: true validator, can read protected values, including its own account's raw MFA authData when protectedFieldsTriggerExempt is enabled.
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Parse Serverto a version that resolves this vulnerability.Fixed in 8.6.107 - Upgrade
Upgrade
Parse Serverto a version that resolves this vulnerability.Fixed in 9.10.5-alpha.8
Event History
Frequently Asked Questions
Who can exploit this issue?
An authenticated client must be able to update an object that has a beforeSave trigger which reverts a field, either through revert() or a constant: true validator. The client may lack read permission for both the object and the affected field.
What configurations make sensitive MFA data exposed?
A client may be able to read its own account's raw MFA authData when protectedFieldsTriggerExempt is enabled, provided the other trigger and update conditions are met.
Which releases need remediation?
Affected releases are Parse Server versions before 8.6.107, and 9.0.0 versions before 9.10.5-alpha.8.