parse-community parse-server up to 8.6.83/9.0.0-9.10.0-alpha.2 FileUpload content-type cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.61+

Summaryinfo

A vulnerability marked as problematic has been reported in parse-community parse-server up to 8.6.83/9.0.0-9.10.0-alpha.2. Affected by this issue is some unknown functionality of the component FileUpload. Performing a manipulation of the argument content-type results in cross site scripting. This vulnerability is cataloged as CVE-2026-61448. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in parse-community parse-server up to 8.6.83/9.0.0-9.10.0-alpha.2. This affects an unknown code of the component FileUpload. The manipulation of the argument content-type with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

Parse Server is affected by a stored cross-site scripting (XSS) vulnerability in versions >= 9.0.0, < 9.10.0-alpha.2 and <= 8.6.83. When an uploaded file's extension is not recognized by the mime package, Parse Server preserves the client-supplied Content-Type. A malformed Content-Type that is not a valid type/subtype media type (e.g., 'image', 'image/', or 'image//svg+xml') bypasses the fileUpload.fileExtensions blocklist and is stored unchanged. On storage adapters that persist and serve the uploaded Content-Type (such as Amazon S3, Google Cloud Storage, or Azure Blob Storage), a browser cannot parse the malformed value and falls back to MIME-sniffing; a file whose body begins with HTML is rendered as HTML, executing embedded script in the application's origin against other users who open the file URL. The default GridFS storage adapter is not affected. Fixed in 9.10.0-alpha.2 and 8.6.84.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-61448 since 07/09/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 9.10.0-alpha.2 or 8.6.84 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: parse-server 9.10.0-alpha.2/8.6.84

Timelineinfo

07/09/2026 CVE reserved
07/11/2026 +2 days Advisory disclosed
07/11/2026 +0 days VulDB entry created
07/11/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-61448 (🔒)
GCVE (CVE): GCVE-0-2026-61448
GCVE (VulDB): GCVE-100-377829

Entryinfo

Created: 07/11/2026 16:24
Changes: 07/11/2026 16:24 (54)
Complete: 🔍
Cache ID: 216::103

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