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NVD / CVE Program· CNA GitHub_M

CVE-2026-39381: Parse Server's Endpoint `/sessions/me` bypasses `_Session` `protectedFields`

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: parse-community parse-server 9.8.0-alpha.7.

Low priority for now. Upgrade to parse-community parse-server 9.8.0-alpha.7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.3 · v4.0—No exploit Fix available
Published
Apr 7, 2026
Updated
Jul 24, 2026
EPSS
0.2% · 10th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
5.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-39381

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
parseplatformparse-server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • parseplatform parse-serverbefore 8.6.75
  • parseplatform parse-server9.0.0 and later · before 9.8.0
  • parseplatform parse-server9.8.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • parse-community parse-server

    • >= 9.0.0, < 9.8.0-alpha.7, >= 7.0.0, < 8.6.75affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
npmparse-serverfrom 7.0.0 · before 8.6.758.6.75
npmparse-serverfrom 9.0.0 · before 9.8.0-alpha.79.8.0-alpha.7

Same product

parseplatform: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-24760Command Injection in Parse server
    55Plan
  • CVE-2022-39396Parse Server vulnerable to Remote Code Execution via prototype pollution in MongoDB BSON parser
    51Plan
  • CVE-2026-30966Parse Server role escalation and CLP bypass via direct `_Join` table write
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-34784Mar 31, 2026 · Parse Server: Streaming file download bypasses afterFind file trigger authorization
    32Monitor
  • ← EarlierCVE-2026-35200Apr 6, 2026 · Parse Server has a file upload Content-Type override via extension mismatch
    8Monitor
  • Later →CVE-2026-39321Apr 7, 2026 · Parse Server has a login timing side-channel reveals user existence
    25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
parse-community parse-server9.8.0-alpha.7 · descriptionVendor (CNA)
npm:parse-server8.6.75Package registry (OSV)
npm:parse-server9.8.0-alpha.7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-3096528 days apartParse Server session token exfiltration via `redirectClassNameForKey` query parameter
    39Monitor
  • CVE-2026-345327 days apartParse Server: Cloud function validator bypass via prototype chain traversal
    36Monitor
  • CVE-2026-3094728 days apartParse Server ha a bypass of class-level permissions in LiveQuery
    34Monitor
  • CVE-2026-2918232 days apartParse Server: Cloud Hooks and Cloud Jobs bypass `readOnlyMasterKey` write restriction
    34Monitor
  • CVE-2026-3022932 days apartParse Server: Endpoint `/loginAs` allows `readOnlyMasterKey` to gain full read and write access as any user
    34Monitor
  • CVE-2026-3342114 days apartParse Server: LiveQuery bypasses CLP pointer permission enforcement
    28Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records