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Krayin EUVDEUVD-2026-77711

| CVE-2026-90944 HIGH
Missing Authentication for Critical Function (CWE-306)
2026-09-14 VulnCheck GHSA-r7r8-vmq2-9gm8
Authentication Bypass Laravel Crm Krayin
8.8
CVSS 4.0 · Vendor: VulnCheck
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Vulnerability Assessment

Weakness
CWE
CWE-306
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.7% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

Missing authentication on Krayin CRM's admin mail ingest route lets any remote, unauthenticated attacker POST crafted RFC 2822 messages to /admin/mail/inbound-parse and plant arbitrary emails — including forged replies stitched into existing conversation threads — in victim CRM inboxes on every release through 2.2.6. VulnCheck reports proof-of-concept exploit code (SSVC Exploitation: PoC) and the attack is fully automatable, but the issue is not listed in CISA KEV, so active in-the-wild abuse is not confirmed; the CVSS v4.0 base score is 8.8, driven by high integrity impact with no confidentiality impact and only limited availability impact.

Affected VersionsENISA

laravel-crm 0 ≤2.2.6

Affected Packages

euvd laravel_crm no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

Vendor (VulnCheck) PRIMARY 8.8 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck) · only source for this CVE.

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
High
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

Krayin CRM through 2.2.6 exposes the POST /admin/mail/inbound-parse endpoint without authentication, allowing unauthenticated attackers to inject arbitrary emails into the CRM inbox. Attackers can supply crafted RFC 2822 messages with forged sender information and headers to insert emails with any subject and body, including replies to existing conversation threads.

Threat Intelligence Overview

EPSS Score
0.7%
Top 48% exploitable
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.7%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
Poc
System Exposure· derived
Open
Automatable
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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References

Advisories & patches
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-90944 REF https://github.com/krayin/laravel-crm REF https://github.com/krayin/laravel-crm/blob/v2.2.6/bootstrap/app.php REF https://github.com/krayin/laravel-crm/blob/v2.2.6/packages/Webkul/Admin/src/Routes/Admin/mail-routes.php REF https://github.com/krayin/laravel-crm/issues/2560 REF https://www.vulncheck.com/advisories/krayin-crm-through-2.2.6-unauthenticated-email-injection-via-inbound-parse

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