PT-2026-29278 · Unknown · Parse Server

Bugbunny-Research · Published 2026-03-31 · Updated 2026-04-06 · CVE-2026-34574

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.69 and 9.7.0-alpha.14

Description 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. The truthiness-based guard checks were replaced with key-presence checks that reject any value for protected session fields, including null.

Recommendations Update to version 8.6.69 or 9.7.0-alpha.14.

Exploit

Fix

Weakness Enumeration

CWE-697

Related Identifiers

BIT-PARSE-2026-34574

CVE-2026-34574

GHSA-F6J3-W9V3-CQ22

Affected Products

Parse Server

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34574.json · Exploit
• https://github.com/parse-community/parse-server/commit/90802969fc713b7bc9733d7255c7519a6ed75d21 · Patch
• https://github.com/parse-community/parse-server/security/advisories/GHSA-f6j3-w9v3-cq22 · Vendor Advisory
• https://github.com/parse-community/parse-server/pull/10348 · Patch
• https://github.com/parse-community/parse-server/commit/ebccd7fe2708007e62f705ee1c820a6766178777 · Patch
• https://github.com/parse-community/parse-server/pull/10347 · Patch
• https://osv.dev/vulnerability/GHSA-f6j3-w9v3-cq22 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-parse-2026-34574 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-34574 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34574 · Security Note
• https://github.com/parse-community/parse-server · Note