Security readout for executives and security teams
Plain-English summary
CVE-2026-23841 is a critical cross-site scripting issue in Movary, a movie watch-history web app. An attacker can abuse the `categoryCreated` URL parameter to run malicious script in a user’s browser. The vendor states versions before 0.70.0 are affected and version 0.70.0 fixes the issue.
Executive priority
Prioritize remediation if Movary is used in your environment, particularly if internet-accessible or broadly available to employees. The issue is rated critical, but the provided sources do not show active exploitation. Upgrade planning should be prompt and verified.
Technical view
Movary before 0.70.0 has insufficient input validation on the `?categoryCreated=` parameter, enabling XSS. The CVSS 3.1 score is 9.3 with network attack vector, low complexity, no privileges required, user interaction required, and changed scope. Mapped weaknesses are CWE-20 and CWE-79.
Likely exposure
Exposure is limited to organizations running Movary versions earlier than 0.70.0, especially if the application is reachable by users through a browser. The source bundle does not identify specific hosting configurations, default exposure, or managed-service impact.
Exploitation context
The advisory indicates exploitation requires user interaction, consistent with browser-based XSS. The CVE is not marked as CISA KEV in the provided data, and the sources do not state active exploitation or public exploit availability.
Researcher notes
The available public details identify the vulnerable parameter and fixed version but do not provide deeper root-cause analysis. Avoid assuming broader parameter coverage or exploit status beyond the advisory. Validate exposure by version and deployment reachability rather than by speculative testing.
Mitigation direction
- Upgrade Movary to version 0.70.0 or later.
- If immediate upgrade is not possible, check vendor guidance for temporary mitigations.
- Restrict access to Movary where business use allows until upgraded.
- Review application security controls that reduce XSS impact, such as session protections.
Validation and detection
- Inventory all Movary deployments and record installed versions.
- Confirm no deployment is running a version earlier than 0.70.0.
- Review reverse proxies or asset inventories for exposed Movary instances.
- After upgrade, confirm the application reports version 0.70.0 or later.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-23841 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N2.85.8Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.3CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/leepeuker/movary/security/advisories/GHSA-v877-x568-4v5vCVE reference · x_refsource_CONFIRM
- https://github.com/leepeuker/movary/releases/tag/0.70.0CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.