Security readout for executives and security teams
Plain-English summary
Movary versions before 0.70.0 contain a cross-site scripting flaw in the categoryDeleted URL parameter. If a user is tricked into opening a crafted link, attacker-controlled script could run in that user’s browser within Movary. The vendor advisory rates this critical, and version 0.70.0 fixes it.
Executive priority
Treat as urgent for any internet-accessible or broadly used Movary deployment. The issue is fixed in 0.70.0 and has high potential confidentiality and integrity impact, but exploitation still depends on user interaction and no active exploitation is confirmed in the provided sources.
Technical view
CVE-2026-23840 is an input-validation and XSS issue affecting leepeuker Movary before 0.70.0. The vulnerable parameter is ?categoryDeleted=. CVSS 3.1 is 9.3, with network attack vector, low complexity, no privileges required, user interaction required, changed scope, high confidentiality and integrity impact, and no availability impact.
Likely exposure
Exposure is limited to organizations or individuals running Movary versions earlier than 0.70.0. Risk is highest where Movary is reachable by users through a browser and attackers can persuade users to open untrusted links.
Exploitation context
The available sources describe the vulnerable parameter and impact, but do not state active exploitation. CISA KEV status in the provided data is false. Exploitation requires user interaction, such as a victim visiting a crafted URL, and could affect the victim’s Movary session context.
Researcher notes
The public record identifies CWE-20 and CWE-79 and points to client-side code plus the 0.70.0 release. Evidence is sufficient for version-based exposure management. The provided sources do not include exploit telemetry, affected hosted services, or additional mitigations beyond upgrading.
Mitigation direction
- Upgrade Movary to version 0.70.0 or later.
- Review the GitHub security advisory for any updated vendor guidance.
- Restrict exposure of Movary until patched if immediate upgrade is not possible.
- Remind users not to open untrusted Movary links before remediation.
Validation and detection
- Inventory Movary deployments and identify versions below 0.70.0.
- Confirm the running application reports version 0.70.0 or later after remediation.
- Review access logs for suspicious requests containing the categoryDeleted parameter.
- Track the vendor advisory and release notes for follow-up changes.
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-2026-23840 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-pj3m-gmq8-2r57CVE reference · x_refsource_CONFIRM
- https://github.com/leepeuker/movary/blob/main/public/js/settings-account-location.js#L204CVE reference · x_refsource_MISC
- 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.