Security readout for executives and security teams
Plain-English summary
A low-privileged Plesk user can reportedly abuse the APS Application Catalog search to run operating-system commands and gain elevated control of the server. Successful compromise could expose hosted data, alter services, or disrupt availability. The supplied sources do not provide a reliable affected-version range or confirmed fix details.
Executive priority
Treat as an immediate remediation priority for Plesk systems with delegated or low-privileged users. Identify exposed installations, verify vendor applicability, constrain access, and deploy confirmed vendor updates. Escalate incident review if logs show suspicious APS Catalog activity or unexpected command execution.
Technical view
CVE-2026-44962 is an XPath injection caused by unsanitized input entering APS Catalog search queries. It is remotely reachable by an authenticated low-privileged user, requires no user interaction, and may lead to arbitrary operating-system command execution and local privilege escalation. CVSS 3.1 is 9.9 with changed scope and high confidentiality, integrity, and availability impact.
Likely exposure
Prioritize Plesk servers where low-privileged users can authenticate and access APS Application Catalog search. Internet exposure increases account-abuse opportunities, but authentication remains required. The supplied affected-version values are not meaningful enough to determine exposure by version; confirm applicability with WebPros.
Exploitation context
The source bundle does not identify this CVE as CISA KEV-listed and provides no cited evidence of active exploitation. That does not establish that exploitation is absent. The low complexity, network reachability, limited privilege requirement, and command-execution impact create substantial exploitation potential.
Researcher notes
The assigned weakness is CWE-643. The described chain crosses from XPath injection in APS Catalog search to operating-system command execution and privilege escalation, but the supplied material does not explain that transition. Affected-version entries of “0” to “0” are unusable; rely on current vendor guidance rather than inferring a range.
Mitigation direction
- Review the WebPros advisory immediately for confirmed affected versions, updates, and vendor-supported mitigations.
- Apply the vendor-provided security update when applicability and availability are confirmed.
- Restrict Plesk administrative access to trusted networks where operationally feasible.
- Review low-privileged Plesk accounts and disable unnecessary or suspicious access.
- Use vendor-supported controls to restrict APS Catalog access if documented.
Validation and detection
- Inventory Plesk installations, versions, exposure, and users able to access APS Catalog search.
- Compare each installed version against the current WebPros advisory; supplied version data is inconclusive.
- Confirm the vendor security update is installed after remediation.
- Review Plesk and operating-system logs for unusual APS searches, command execution, or privilege changes.
- Investigate unexpected low-privileged account activity and unauthorized configuration 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-643: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-44962 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
- 9.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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.
SSVC decision data
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:L/UI:N/S:C/C:H/I:H/A:H3.16hackeroneVulnerability scoring details
Base CVSS 3.1 score
9.9CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://support.plesk.com/hc/en-us/articles/38633651286679-Vulnerability-CVE-2026-44962-in-Plesk-s-APS-CatalogCVE reference, hackerone
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 Neutralization of Data within XPath Expressions ('XPath Injection')
Improper Neutralization of Data within XPath Expressions ('XPath Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.