How severe is CVE-2026-39381?

CVE-2026-39381 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-39381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-39381?

CVE-2026-39381 primarily affects Parseplatform Parse-server. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-39381?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-39381 have an EU (EUVD) identifier?

Yes. CVE-2026-39381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19917.

When was CVE-2026-39381 published?

CVE-2026-39381 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-39381

CVE-2026-39381 is a medium-severity vulnerability in Parseplatform Parse-server with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 5.3
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19917
Weakness: CWE-863
Affected product: Parseplatform Parse-server
Published: 2026-04-07
Last modified: 2026-06-17

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.7 and 8.6.75, the GET /sessions/me endpoint returns _Session fields that the server operator explicitly configured as protected via the protectedFields server option. Any authenticated user can retrieve their own session's protected fields with a single request. The equivalent GET /sessions and GET /sessions/:objectId endpoints correctly strip protected fields. This vulnerability is fixed in 9.8.0-alpha.7 and 8.6.75.

Frequently asked questions

What is CVE-2026-39381?: Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.7 and 8.6.75, the GET /sessions/me endpoint returns _Session fields that the server operator explicitly configured as protected via the protectedFields server option. Any authenticated user can retrieve their own session's protected fields with a single request. The equivalent GET /sessions and GET /sessions/:objectId endpoints correctly strip protected fields. This vulnerability is fixed in 9.8.0-alpha.7 and 8.6.75.
How severe is CVE-2026-39381?: CVE-2026-39381 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-39381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-39381?: CVE-2026-39381 primarily affects Parseplatform Parse-server. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-39381?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-39381 have an EU (EUVD) identifier?: Yes. CVE-2026-39381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19917.
When was CVE-2026-39381 published?: CVE-2026-39381 was published on 2026-04-07 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha6:*:*:*:node.js:*:*

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