PT-2026-26482 · Unknown · Parse Server

Fancymalware · Published 2026-03-19 · Updated 2026-03-27 · CVE-2026-33323

Positive Technologies (AI Summary)

CVSS v4.0

6.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.51 Parse Server versions prior to 9.6.0-alpha.40

Description Parse Server contains a flaw where the Pages route and legacy PublicAPI route for resending email verification links reveal different responses based on whether a username exists and has an unverified email. This allows an unauthenticated attacker to enumerate valid usernames by observing redirect targets. The emailVerifySuccessOnInvalidEmail configuration option, which is enabled by default and protects the API route, did not apply to these routes. The issue is addressed by ensuring these routes respect the emailVerifySuccessOnInvalidEmail option, redirecting to the success page regardless of the outcome when the option is set to true.

Recommendations Upgrade to Parse Server version 8.6.51 or later. Upgrade to Parse Server version 9.6.0-alpha.40 or later.

Exploit

Fix

Weakness Enumeration

CWE-204

Related Identifiers

BIT-PARSE-2026-33323

CVE-2026-33323

GHSA-H29G-Q5C2-9H4F

Affected Products

Parse Server

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33323.json · Exploit
• https://github.com/parse-community/parse-server/security/advisories/GHSA-h29g-q5c2-9h4f · Vendor Advisory
• https://github.com/parse-community/parse-server/commit/967aa57732202009b2389ce9ecb3130d53d657e5 · Patch
• https://github.com/parse-community/parse-server/commit/fbda4cb0c5cbc8fad08a216823b6b64d4ae289c3 · Patch
• https://osv.dev/vulnerability/GHSA-h29g-q5c2-9h4f · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-33323 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-parse-2026-33323 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33323 · Security Note
• https://github.com/parse-community/parse-server/pull/10238 · Note
• https://github.com/parse-community/parse-server/pull/10243 · Note
• https://github.com/parse-community/parse-server · Note