CVE-2026-30965CRITICAL 9.1EPSS p27.7%

CVE-2026-30965CVE-2026-30965

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.8 and 8.6.21, a vulnerability in Parse Server's query handling allows an authenticated or unauthenticated attacker to exfiltrate session tokens of other users by exploiting the redirectClassNameForKey query parameter. Exfiltrated session tokens can be used to take over user accounts. The vulnerability requires the attacker to be able to create or update an object with a new relation field, which depends on the Class-Level Permissions of at least one class. This vulnerability is fixed in 9.5.2-alpha.8 and 8.6.21.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.36% probability of exploitation · percentile 27.7% · 2026-06-19T12:03:05Z
Published2026-03-10
Last modified2026-03-11

Underlying weaknesses· 1

CWE-863

References

  1. https://github.com/parse-community/parse-server/releases/tag/8.6.21
  2. https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.8
  3. https://github.com/parse-community/parse-server/security/advisories/GHSA-6r2j-cxgf-495f

1

TypeTargetConfidenceTier
WeaknessIncorrect Authorizationcwe-8630%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.