parse-community parse-server up to 8.6.42/9.6.0-alpha.18 Regular Expression uncaught exception

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in parse-community parse-server up to 8.6.42/9.6.0-alpha.18. This issue affects some unknown processing of the component Regular Expression Handler. This manipulation causes uncaught exception. The identification of this vulnerability is CVE-2026-32770. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in parse-community parse-server up to 8.6.42/9.6.0-alpha.18. It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component Regular Expression Handler. The manipulation with an unknown input leads to a uncaught exception vulnerability. The CWE definition for the vulnerability is CWE-248. An exception is thrown from a function, but it is not caught. As an impact it is known to affect availability. The summary by CVE 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.19 and 8.6.43, a remote attacker can crash the Parse Server by subscribing to a LiveQuery with an invalid regular expression pattern. The server process terminates when the invalid pattern reaches the regex engine during subscription matching, causing denial of service for all connected clients. The fix in 9.6.0-alpha.19 and 8.6.43 validates regular expression patterns at subscription time, rejecting invalid patterns before they are stored. Additionally, a defense-in-depth try-catch prevents any subscription matching error from crashing the server process. As a workaround, disable LiveQuery if it is not needed.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-32770 since 03/13/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 8.6.43 or 9.6.0-alpha.19 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CNA Base Score: 5.9
CNA Vector (GitHub_M): 🔒

CVSSv2info

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

Exploitinginfo

Class: Uncaught exception
CWE: CWE-248
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: parse-server 8.6.43/9.6.0-alpha.19
Patch: github.com

Timelineinfo

03/13/2026 CVE reserved
03/18/2026 +5 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
03/23/2026 +5 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-827p-g5x5-h86c
Status: Confirmed

CVE: CVE-2026-32770 (🔒)
GCVE (CVE): GCVE-0-2026-32770
GCVE (VulDB): GCVE-100-351619

Entryinfo

Created: 03/18/2026 23:49
Updated: 03/23/2026 20:28
Changes: 03/18/2026 23:49 (65), 03/22/2026 14:15 (11), 03/23/2026 20:28 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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