Cyber Resilience

CVE-2026-34574

Parseplatform Parse-Server ≤ 8.6.69

Published
31 March 2026
Modified
24 July 2026
Patch / advisory
View advisory
CVSS Score v4 5.3
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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
EPSS Score 0.0021 11th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-34574 is a medium-severity Incorrect Comparison (CWE-697) vulnerability in Parseplatform Parse-Server. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Valid Accounts (T1078); ranked at the 11th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.69 and 9.7.0-alpha.14, an authenticated user can bypass the immutability guard on session fields (expiresAt, createdWith) by sending a…

more

null value in a PUT request to the session update endpoint. This allows nullifying the session expiry, making the session valid indefinitely and bypassing configured session length policies. This issue has been patched in versions 8.6.69 and 9.7.0-alpha.14.

CWE(s)
CWE-697

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1078 Valid Accounts Stealth
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
Why these techniques?

Bypassing session expiry on authenticated accounts directly enables indefinite use of valid sessions/accounts for persistence.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-32242Same product: Parseplatform Parse-Server
CVE-2026-30949Same product: Parseplatform Parse-Server
CVE-2026-33624Same product: Parseplatform Parse-Server
CVE-2026-27804Same product: Parseplatform Parse-Server
CVE-2026-33409Same product: Parseplatform Parse-Server
CVE-2026-31875Same product: Parseplatform Parse-Server
CVE-2026-34224Same product: Parseplatform Parse-Server
CVE-2026-32248Same product: Parseplatform Parse-Server
CVE-2026-30229Same product: Parseplatform Parse-Server
CVE-2026-30966Same product: Parseplatform Parse-Server

Affected Assets

parseplatform
parse-server
9.7.0 · ≤ 8.6.69 · 9.0.0 — 9.7.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-3 Access Enforcement
  • SI-10 Information Input Validation
  • AC-6 Least Privilege
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match
prevent

Directly enforces immutability rules on session objects so that authenticated users cannot overwrite expiresAt/createdWith via PUT.

SI-10 Information Input Validation good match
prevent

Rejects or sanitizes the null values supplied for protected session fields before the update logic is reached.

AC-6 Least Privilege partial match
prevent

Limits the set of session attributes an ordinary user is permitted to modify, reducing the impact of any bypass of the immutability guard.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure development practices directly require correct logic for security comparisons and thereby prevent this class of flaw.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
detects

Security testing can detect incorrect comparison flaws before deployment.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle includes code review and testing that can catch incorrect comparison logic.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate correct comparison logic for security decisions.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles can require robust comparison mechanisms for access decisions.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly address avoiding incorrect comparison operators and logic.

A.8.5 Secure authentication partial match
degrades

Secure authentication mechanisms rely on correct comparison of credentials or tokens.

References