---
title: "CVE-2026-32248: Parse Server: Account takeover via operator injection in authentication data identifier"
url: https://erroneo.us/security/cve/CVE-2026-32248/
description: "CVE-2026-32248 (parse-server (npm)): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-12
date_modified: 2026-03-13
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-32248"
kev: false
cvss: 9.3
epss: 0.00952
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-32248: Parse Server: Account takeover via operator injection in authentication data identifier

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.0% , percentile 61: FIRST’s model estimates a 1.0% chance of exploitation activity in the next 30 days, higher than 61% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes parse-server (npm) >= 9.0.0, < 9.6.0-alpha.12, fixed in 9.6.0-alpha.12 ; parse-server (npm) < 8.6.38, fixed in 8.6.38 . Check your lockfile, including transitive dependencies.

## What it is

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.12 and 8.6.38, an unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user identifier (e.g. anonymous authentication). By sending a crafted login request, the attacker can cause the server to perform a pattern-matching query instead of an exact-match lookup, allowing the attacker to match an existing user and obtain a valid session token for that user's account. Both MongoDB and PostgreSQL database backends are affected. Any Parse Server deployment that allows anonymous authentication (enabled by default) is vulnerable. This vulnerability is fixed in 9.6.0-alpha.12 and 8.6.38.

## Affected packages

- npm `parse-server` >= 9.0.0, < 9.6.0-alpha.12 → fixed: 9.6.0-alpha.12
- npm `parse-server` < 8.6.38 → fixed: 8.6.38

## Affected products (CVE record)

- parse-community parse-server: >= 9.0.0, < 9.6.0-alpha.12, < 8.6.38

## Severity

- GitHub_M CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.95% probability of exploitation activity in the next 30 days; percentile 61.

## Sources

- [GitHub Advisory GHSA-5fw2-8jcv-xh87](https://github.com/advisories/GHSA-5fw2-8jcv-xh87)
- [CVE.org record CVE-2026-32248](https://www.cve.org/CVERecord?id=CVE-2026-32248)
- [NVD entry CVE-2026-32248](https://nvd.nist.gov/vuln/detail/CVE-2026-32248)
- [github.com](https://github.com/parse-community/parse-server/security/advisories/GHSA-5fw2-8jcv-xh87)
- [github.com](https://github.com/parse-community/parse-server/releases/tag/8.6.38)
- [github.com](https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.12)

---
Source page: https://erroneo.us/security/cve/CVE-2026-32248/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt