TI-2026-50840 Aliases CVE-2026-72582 GHSA-x3w9-j9j5-qcw7

fastschema - Unauthenticated NULL Pointer Dereference DoS in Account Recovery Endpoint

MEDIUM 40CWE-476Published 2026-08-10 · Updated 2026-08-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

A NULL pointer dereference vulnerability in fastschema through v0.15.1 allows an unauthenticated remote attacker to crash the server process with a single HTTP request. The sendOTPEmail function in pkg/auth/local.go dereferences a pointer obtained from an unchecked error path without validating it is non-nil, causing a fatal panic that terminates the entire server when a recovery request is sent to the /api/auth/local/recover endpoint.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00608 49th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
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
fastschema	fastschema	up to 0.15.1	—	No fix listed	CNA

fastschema Vendorfastschema Affected up to 0.15.1 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-72582
2026-10-03 Alias added: GHSA-x3w9-j9j5-qcw7

References

Advisory 1

Product

Other 1

Vulnerable File

TI-2026-50842 fastschema - TOCTOU Race Condition Bypasses OTP Attempt Limit in Account Recovery CVSS 3.1HIGH 7.4
TI-2026-50841 fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences