HOMEVULNERABILITIESCVE-2026-33508
HIGH

CVE-2026-33508

CWE-674Published: March 24, 2026· Updated: Mar 25, 2026

7.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:13.9th

Official Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can send a subscription with deeply nested logical operators, causing excessive recursion and CPU consumption that degrades or disrupts service availability. This issue has been patched in versions 8.6.56 and 9.6.0-alpha.45.

NVD Source

Technical Analysis

CVE-2026-33508 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

parseplatform1 product
parse-server
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabab7fe0c82b7a899
PATCHhttps://github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3fa70cb1825f159b
ADVISORYhttps://github.com/parse-community/parse-server/security/advisories/GHSA-6qh5-m6g3-xhq6

All References (5)

→
https://github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabab7fe0c82b7a899Patch
→
https://github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3fa70cb1825f159bPatch
→
https://github.com/parse-community/parse-server/pull/10259Issue Tracking
→
https://github.com/parse-community/parse-server/pull/10260Issue Tracking
→
https://github.com/parse-community/parse-server/security/advisories/GHSA-6qh5-m6g3-xhq6Vendor Advisory

Quick Facts

CVE IDCVE-2026-33508
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-674
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMar 24, 2026

Related CVEs (CWE-674)

CVE-2026-25971
9.8
CVE-2026-40324
9.1
CVE-2026-41673
8.7
CVE-2026-25048
8.7
CVE-2026-8936
8.2
CVE-2026-33498
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33508 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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