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Movary CVE-2026-23841

CRITICAL
Improper Input Validation (CWE-20)
2026-01-19 security-advisories@github.com
XSS Movary
9.3
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
9.3 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 02, 2026 - 15:17 vuln.today
Public exploit code
CVE Published
Jan 19, 2026 - 19:16 nvd
CRITICAL 9.3

DescriptionGitHub Advisory

Movary is a web application to track, rate and explore your movie watch history. Due to insufficient input validation, attackers can trigger cross-site scripting payloads in versions prior to 0.70.0. The vulnerable parameter is ?categoryCreated=. Version 0.70.0 fixes the issue.

AnalysisAI

Movary has a third input validation vulnerability that allows authenticated users to delete arbitrary files from the server, potentially causing data loss or service disruption.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malicious URL with XSS payload in categoryCreated parameter
Delivery
Send link to Movary user
Exploit
User clicks link and visits page
Execution
JavaScript executes in victim's browser context
Impact
Attacker steals session cookies or credentials
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Vulnerability AssessmentAI

Exploitation Movary versions prior to 0.70.0 with the categoryCreated parameter accepting unvalidated user input. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 9.3 with PoC. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker chains all three Movary vulnerabilities: reads configuration to find targets, writes a web shell for persistence, then deletes log files to cover tracks.
Remediation Update Movary to address all three file manipulation vulnerabilities. Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all affected systems running versions and apply vendor patches immediately. …

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CVE-2026-23841 vulnerability details – vuln.today
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