Unhandled email errors in Parse Server let attackers crash the server
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-248.
Summary
Parse Server before 8.6.97 and from 9.0.0 before 9.10.2-alpha.6 does not handle errors raised while sending verification or password reset emails, which makes the server process exit (CWE-248). An unauthenticated remote client that holds only the public application keys can trigger it by signing up or requesting an email while the mail provider rejects, rate limits, or is unavailable.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Parse Server before 8.6.97 and 9.0.0 before 9.10.2-alpha.6 does not handle errors raised while sending verification or password reset emails, causing the server process to exit. A client holding only the public application keys can sign up, request a verification email, or request a password reset while the mail provider rejects, rate limits, or is unavailable, crashing the server.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| parse-community | parse-server | before 8.6.97; 9.0.0 to before 9.10.2-alpha.6 | 8.6.97, 9.10.2-alpha.6 | Patch available | CNA |
- parse-server Vendorparse-community Affected before 8.6.97; 9.0.0 to before 9.10.2-alpha.6 Fixed in 8.6.97, 9.10.2-alpha.6 Patch available CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:*:*:* | — | — | parse-community |
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:*:*:* Versions — — ·parse-community
Remediation
Upgrade parse-server to 8.6.97 for the 8.x line and to 9.10.2-alpha.6 for the 9.x line.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA parse-server (parse-community) Fixed in 8.6.97, 9.10.2-alpha.6
Timeline
- 2026-10-15 Threatist record created from CVE-2026-110854
- 2026-10-15 CISA SSVC decision points changed
- 2026-10-15 Priority changed: MEDIUM → LOW
References
More parse-community vulnerabilities
- TI-2022-08574 Command Injection in Parse server CVSS 3.1CRITICAL 10.0
- TI-2024-18136 Parse Server literalizeRegexPart SQL Injection CVSS 3.1CRITICAL 10.0
- TI-2022-18768 Parse Server vulnerable to Remote Code Execution via prototype pollution in MongoDB BSON parser CVSS 3.1CRITICAL 9.8
- TI-2024-31550 Parse Server's custom object ID allows to acquire role privileges CVSS 3.1HIGH 8.1
- TI-2025-35510 parse is a package designed to parse JavaScript SDK. CVSS 3.1MEDIUM 6.5
- TI-2024-26265 ZDI-CAN-23894: Parse Server literalizeRegexPart SQL Injection Authentication Bypass Vulnerability CVSS 3.1CRITICAL 9.8
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences