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Vulnerabilities

Vulnerability · CVE-2026-32728

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js.

Published Mar 18, 2026 · catalog updated Jun 17, 2026 · Parse Server is an

Check if you run it

No confirmed exploitation is on record for CVE-2026-32728. EPSS is 0.38%. Act only if a listed version of Parse Server is an is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Parse Server is an).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.38%
Remediation
Advisory link
Affected products
cpe parseplatform/parse-server

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.15 and 8.6.41, an attacker who is allowed to upload files can bypass the file extension filter by appending a MIME parameter (e.g. ) to the header. This causes the extension validation to fail matching against the blocklist, allowing active content to be stored and served under the application's domain. In addition, certain XML-based file extensions that can render scripts in web browsers are not included in the default blocklist. This can lead to stored XSS attacks, compromising session tokens, user credentials, or other sensitive data accessible via the browser's local storage. The fix in versions 9.6.0-alpha.15 and 8.6.41 strips MIME parameters from the header before validating the file extension against the blocklist. The default blocklist has also been extended to include additional XML-based extensions ( , , , , , , ) that can render active content in web browsers. Note that the option is intended to be configured as an allowlist of file extensions that are valid for a specific application, not as a denylist. The default denylist is provided only as a basic default that covers most common problematic extensions. It is not intended to be an exhaustive list of all potentially dangerous extensions. Developers should not rely on the default value, as new extensions that can render active content in browsers might emerge in the future. As a workaround, configure the option to use an allowlist of only the file extensions that your application needs, rather than relying on the default blocklist.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe parseplatform/parse-server9.6.0

How to fix CVE-2026-32728

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-32728. EPSS is 0.38%. Act only if a listed version of Parse Server is an is installed.

Which versions are affected?

Compare what you have installed with 9.6.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.38%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 18, 2026 · NIST NVD

    Detected

    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.15 and 8.6.41, an attacker who is allowed to upload files can bypass the file extension filter by appending a MIME parameter (e.g. ) to the header. This causes the extension validation to fail matching against the blocklist, allowing active content to be stored and served un

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.15 and 8.6.41, an attacker who is allowed to upload files can bypass the file extension filter by appending a MIME parameter (e.g. ) to the header. This causes the extension validation to fail matching against the blocklist, allowing active content to be stored and served un

Sources

  • CVE.orgVulnerability recordCVE-2026-32728

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-32728

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-32728

    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.15 and 8.6.41, an attacker who is allowed to upload files can bypass the file extension filter by appending a MIME parameter (e.g. ) to the

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.