Security readout for executives and security teams
Plain-English summary
Statamic CMS versions 6.0.0 through before 6.4.0 allow authenticated Control Panel users to bypass an intended elevated-session verification step. This may let a logged-in user reach sensitive administrative actions beyond what was intended. The vendor fixed the issue in 6.4.0.
Executive priority
Prioritize patching in the next regular security window, sooner for internet-facing or multi-user editorial environments. The issue requires an authenticated user but has high potential impact across confidentiality, integrity, and availability.
Technical view
CVE-2026-27939 is a CWE-287 authentication flaw in Statamic CMS. The issue affects Statamic >=6.0.0 and <6.4.0. It requires low privileges, no user interaction, and is network-reachable according to CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, score 8.8.
Likely exposure
Exposure is limited to organizations running Statamic CMS 6.x before 6.4.0 with authenticated Control Panel users. Risk is higher where many editors, contractors, or shared administrative accounts have panel access.
Exploitation context
Sources describe privilege escalation by authenticated Control Panel users under certain conditions. The CVE is not marked KEV, and the provided sources do not state active exploitation or public exploit availability.
Researcher notes
The public description does not define the exact conditions for bypass, and exploit details should not be inferred. The fixing commit and GitHub advisory are the best sources for code-level triage and regression validation.
Mitigation direction
- Upgrade Statamic CMS to version 6.4.0 or later.
- Review vendor advisory GHSA-rw9x-pxqx-q789 for current guidance.
- Limit Control Panel access to trusted users until upgraded.
- Review and remove unnecessary Control Panel accounts and permissions.
Validation and detection
- Inventory Statamic CMS instances and identify versions >=6.0.0 and <6.4.0.
- Confirm upgraded systems report Statamic CMS 6.4.0 or later.
- Review Control Panel user lists for unnecessary or stale access.
- Check administrative activity logs for unexpected sensitive operations.
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-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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-2026-27939 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/statamic/cms/security/advisories/GHSA-rw9x-pxqx-q789CVE reference · x_refsource_CONFIRM
- https://github.com/statamic/cms/commit/8639ef96217eaa682bc42e8a62769cb7c6a85d3aCVE 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 Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.