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CVE-2026-121965

Parse Server before 8.6.113 and 9.10.6-alpha.5 Prototype Pollution via Dot Notation Key

CVSS score

6.0

EPSS probability

—

Risk score

0.6

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Parse Server Prototype Pollution Vulnerability (CVE-2026-121965)

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

Parse Server contains a prototype pollution vulnerability when building objects for Cloud Code triggers and LiveQuery, which can lead to the corruption of process-wide built-ins and denial of service.

Why does it matter?

Clients with write access can corrupt built-in functions, causing unrelated requests to fail and resulting in a denial of service until the server is restarted.

What should be done?

  • Update Parse Server to version 8.6.113 or later
  • Update Parse Server to version 9.10.6-alpha.5 or later
  • Follow vendor security advisories
Chain of evidence and sources2 verified claims

Parse Server 8.6.113 öncesi ve 9.10.6-alpha.5 öncesi sürümler prototip kirliliği zafiyeti barındırmaktadır.

S0 · daybreach-canonicalS1 · cvelist

Zafiyet, yerleşik işlevlerin bozulmasına ve yeniden başlatmaya kadar hizmet kesintisine neden olabilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

Parse Server before 8.6.113 and 9.0.0 before 9.10.6-alpha.5 contains a prototype pollution vulnerability when building objects for Cloud Code triggers and LiveQuery, where a dot notation key whose intermediate segment resolves through an inherited member writes onto a process-wide built-in. Clients with write access to an object in a class with a trigger or LiveQuery can corrupt a built-in function, making unrelated requests fail until restart and denying service to all clients and hosted applications.

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

CWE: CWE-1321

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-121965 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1parse-communityparse-server View
2parse-communityparse-server View
Total affected vendors: 1|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.0CVSS V4_0MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCVE CNA
6.0CVSS V40MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/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:XNVD
5.3CVSS V3_1MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HCVE CNA
5.3CVSS V31MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

4 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

GitHub Pull Request #10810

Open source
cvelist

GitHub Pull Request #10811

Open source
reference

GitHub Pull Request #10810

Open source
reference

GitHub Pull Request #10811

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-121965 is associated with the following CWEs:

CWE-1321: Improper Modification of Object Prototype Attributes ('Prototype Pollution')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-121965 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

GitHub Security Advisory (GHSA-95hp-82c6-25q5)vendor-advisoryGitHub Pull Request #10810patchGitHub Pull Request #10811patchVulnCheck Advisory: Parse Server before 8.6.113 and 9.10.6-alpha.5 Prototype Pollution via Dot Notation Keyvendor-advisory

CVSS Vector Radar Chart

6.0 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama doğrulandı

4 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

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Weakness Type (CWE & CAPEC)

CWE-1321

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CVE-2026-121965 · Parse Server before 8.6.113 and…