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CVE-2026-30965

Parseplatform Parse-server broken access control

9.1 CRITICALEPSS 1.55%
  1. Published10 Mar 2026

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.8 and 8.6.21, a vulnerability in Parse Server's query handling allows an authenticated or unauthenticated attacker to exfiltrate session tokens of other users by exploiting the redirectClassNameForKey query parameter. Exfiltrated session tokens can be used to take over user accounts. The vulnerability requires the attacker to be able to create or update an object with a new relation field, which depends on the Class-Level Permissions of at least one class. This vulnerability is fixed in 9.5.2-alpha.8 and 8.6.21.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Parseplatform Parse-server9.5.2 · ≥ 9.0.0 < 9.5.2 · < 8.6.21

Remediation

Fixed in
Parseplatform Parse-server≥ 9.5.2

References

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Frequently asked

Is CVE-2026-30965 being actively exploited?

CVE-2026-30965 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.55%.

How severe is CVE-2026-30965?

CVE-2026-30965 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 1.55% probability of exploitation.

Which products are affected by CVE-2026-30965?

Affected products include Parseplatform Parse-server.

How do I fix CVE-2026-30965?

Upgrade affected software to a fixed version, for example Parseplatform Parse-server 9.5.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-30965 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.