PT-2026-29167 · Unknown · Parse Server

Mtrezza · Published 2026-03-30 · Updated 2026-04-06 · CVE-2026-34373

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.66 Parse Server versions prior to 9.7.0-alpha.10

Description Parse Server, an open source backend deployable on Node.js infrastructures, has an issue where the GraphQL API endpoint does not enforce the allowOrigin server option, unconditionally allowing cross-origin requests from any website. This bypasses origin restrictions configured by operators to control website interactions with the Parse Server API. The REST API correctly enforces the configured allowOrigin restriction. The issue affects the ''/graphql'' API endpoint.

Recommendations Upgrade to Parse Server version 8.6.66 or later. Upgrade to Parse Server version 9.7.0-alpha.10 or later.

Exploit

Fix

Origin Validation Error

Weakness Enumeration

CWE-346

Related Identifiers

BIT-PARSE-2026-34373

CVE-2026-34373

GHSA-Q3P6-G7C4-829C

Affected Products

Parse Server

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34373.json · Exploit
• https://github.com/parse-community/parse-server/commit/4dd0d3d8be1c39664c74ad10bb0abaa76bc41203 · Patch
• https://github.com/parse-community/parse-server/pull/10334 · Patch
• https://github.com/parse-community/parse-server/commit/0347641507891d0013ec57f7c10f012064f41263 · Patch
• https://github.com/parse-community/parse-server/security/advisories/GHSA-q3p6-g7c4-829c · Vendor Advisory
• https://github.com/parse-community/parse-server/pull/10335 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-34373 · Security Note
• https://osv.dev/vulnerability/CVE-2026-34373 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-parse-2026-34373 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-q3p6-g7c4-829c · Vendor Advisory
• https://github.com/parse-community/parse-server · Note
• https://twitter.com/cyberbivash/status/2039013862989554176 · Twitter Post
• https://twitter.com/CVEnew/status/2039004430754783251 · Twitter Post