Security readout for executives and security teams
Plain-English summary
A WordPress plugin identified as IDE/Flask Micro code-editor allows lower-privileged logged-in users to store malicious script in a shortcode title attribute. The script can run when someone views the affected page. This is most urgent for sites that allow Contributor-level accounts or untrusted authors.
Executive priority
Treat as a near-term remediation item for WordPress environments with multiple content contributors. It is not confirmed as actively exploited, but stored XSS can affect administrators and visitors and may support account compromise or content tampering.
Technical view
CVE-2026-1827 is a stored cross-site scripting issue in the codeflask shortcode title attribute, caused by insufficient sanitization and output escaping. Affected versions are reported as all versions up to and including 1.0.0. CVSS 3.1 is 6.4 with low privileges required, changed scope, and low confidentiality/integrity impact.
Likely exposure
WordPress sites using the IDE/Flask Micro code-editor plugin at version 1.0.0 or earlier, especially where Contributor or higher accounts can create content using shortcodes.
Exploitation context
The source bundle does not show CISA KEV listing or public evidence of active exploitation. Exploitation requires authenticated Contributor-level access or higher. Impact is stored XSS against users who access an injected page.
Researcher notes
There is naming inconsistency in the provided data: the title says IDE Micro code-editor, while the description and repository paths reference Flask Micro. No fixed version is identified in the provided sources. Validate against the installed plugin slug and vendor metadata before assigning ownership.
Mitigation direction
- Identify whether the IDE/Flask Micro code-editor plugin is installed and enabled.
- Check vendor or WordPress plugin guidance for a fixed release or official remediation.
- If no fix is available, disable or remove the plugin where feasible.
- Restrict Contributor and author access on sites that must keep the plugin enabled.
- Review existing content for suspicious codeflask shortcodes or unexpected title attributes.
Validation and detection
- Inventory plugin installations and versions across WordPress sites.
- Confirm whether any site runs version 1.0.0 or earlier.
- Review role assignments for Contributor, Author, Editor, and Administrator accounts.
- Inspect pages and posts containing codeflask shortcodes for abnormal title values.
- Monitor WordPress security logs for suspicious content changes by lower-privileged users.
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-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-2026-1827 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
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/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:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/fc1ef15f-ad31-4525-bbe5-bc3cc4485b20?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/flask-micro/trunk/flask_micro.php#L80CVE reference
- https://plugins.trac.wordpress.org/browser/flask-micro/tags/1.0.0/flask_micro.php#L80CVE reference
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 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.