Security readout for executives and security teams
Plain-English summary
CVE-2020-36948 affects VestaCP 0.9.8-26. The LoginAs feature does not sufficiently validate session tokens, which can let a remote attacker access user accounts without proper administrative permission. For hosting environments, this can threaten hosted sites, email, databases, and control-panel integrity.
Executive priority
Treat as urgent for any internet-facing VestaCP 0.9.8-26 server. The vulnerability can undermine account separation in hosting environments and may enable broad compromise of customer or internal web assets.
Technical view
The issue is described as CWE-863 improper authorization in VestaCP’s LoginAs module. Public advisories state attackers can manipulate authentication tokens and perform unauthorized login requests. The provided CVSS 3.1 score is 9.8, with network access, low complexity, no privileges, and no user interaction.
Likely exposure
Organizations running VestaCP version 0.9.8-26 are the named exposure. Risk is highest when the VestaCP control panel is reachable from the internet or shared hosting users rely on LoginAs-related account switching.
Exploitation context
The source bundle includes public exploit/advisory references, including Exploit-DB and Vulnerability Lab. However, the bundle does not show CISA KEV listing or other cited evidence of active exploitation in the wild.
Researcher notes
Evidence supports a critical authorization/session validation flaw and public exploit availability. The provided sources do not name a fixed version, patch, or confirmed active exploitation. Avoid assuming impact beyond VestaCP 0.9.8-26 unless vendor data confirms it.
Mitigation direction
- Identify any VestaCP 0.9.8-26 instances immediately.
- Check VestaCP and advisory sources for fixed versions or official guidance.
- Restrict control-panel access to trusted networks or VPN where possible.
- Prioritize upgrade, replacement, or isolation of affected systems.
- Review exposed hosting accounts for unauthorized access or changes.
Validation and detection
- Inventory VestaCP versions across hosting servers.
- Confirm whether LoginAs functionality is enabled or in use.
- Check whether the panel is internet-accessible.
- Review authentication and session logs for unusual LoginAs activity.
- Verify remediation against vendor or advisory guidance.
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-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-36948 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.
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:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49219CVE reference · exploit
- VestaCP Official HomepageCVE reference · product
- Vulnerability Lab AdvisoryCVE reference · technical-description, exploit
- Benjamin Kunz Mejri ProfileCVE reference · vendor-advisory
- VulnCheck Advisory: VestaCP 0.9.8-26 - 'LoginAs' Insufficient Session ValidationCVE reference · third-party-advisory
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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.