CVE-2026-34574

Name: CVE-2026-34574
Creator: NVD / NIST
Published: 2026-03-31T16:16:33.923+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2026-34574 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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 null value in a PUT request to the session update endpoint. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

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 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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS 4.0

5.3/10

CVSS: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 Probability

0.21%

11.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-697

Affected Software

Vendor	Product	Versions	Update
Parseplatform	Parse-Server	< 8.6.69	—
Parseplatform	Parse-Server	>= 9.0.0, < 9.7.0	—
Parseplatform	Parse-Server	9.7.0	Alpha1

References

https://github.com/parse-community/parse-server/commit/90802969fc713b7bc9733d7255c7519a6ed75d21Patch
https://github.com/parse-community/parse-server/commit/ebccd7fe2708007e62f705ee1c820a6766178777Patch
https://github.com/parse-community/parse-server/pull/10347Issue Tracking, Patch
https://github.com/parse-community/parse-server/pull/10348Issue Tracking, Patch
https://github.com/parse-community/parse-server/security/advisories/GHSA-f6j3-w9v3-cq22Patch, Vendor Advisory

Timeline

Published: Mar 31, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-34574?

How severe is CVE-2026-34574?

CVE-2026-34574 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2026-34574?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-34574?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST