PT-2026-26782 · Unknown · Parse Server

Nikoladzekic · Published 2026-03-20 · Updated 2026-03-27 · CVE-2026-33498

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.55 Parse Server versions prior to 9.6.0-alpha.44

Description An unauthenticated attacker can send a crafted HTTP request with a deeply nested query containing logical operators, causing the Parse Server process to hang permanently. The server becomes unresponsive and requires manual restart. This is a bypass of a previous fix. The request exploits a flaw in how the server handles complex queries, leading to a denial-of-service condition.

Recommendations Update to Parse Server version 8.6.55 or later. Update to Parse Server version 9.6.0-alpha.44 or later.

Exploit

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

BIT-PARSE-2026-33498

CVE-2026-33498

GHSA-9FJP-Q3C4-6W3J

Affected Products

Parse Server

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33498.json · Exploit
• https://github.com/parse-community/parse-server/commit/2581b5426047ce9cbcd3d9c0e8379e9c30e23ab5 · Patch
• https://github.com/parse-community/parse-server/commit/85994eff9e7b34cac7e1a2f5791985022a1461d1 · Patch
• https://github.com/parse-community/parse-server/security/advisories/GHSA-9fjp-q3c4-6w3j · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9fjp-q3c4-6w3j · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33498 · Security Note
• https://osv.dev/vulnerability/BIT-parse-2026-33498 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-33498 · Vendor Advisory
• https://github.com/parse-community/parse-server/pull/10258 · Note
• https://github.com/parse-community/parse-server/pull/10257 · Note
• https://github.com/parse-community/parse-server · Note