Security readout for executives and security teams
Plain-English summary
CVE-2026-1246 affects the ShortPixel Image Optimizer WordPress plugin through version 6.4.2. An authenticated user with Editor-level access or higher could read arbitrary server files. The main business risk is exposure of sensitive configuration data, such as database credentials or authentication keys, from WordPress hosting environments.
Executive priority
Treat as a targeted confidentiality risk, not a broad unauthenticated emergency. Prioritize sites where editors are numerous, third-party-managed, or recently compromised. Remediate during the next security maintenance window, faster for sensitive or externally managed WordPress environments.
Technical view
The issue is a CWE-22 path traversal flaw in the plugin’s loadLogFile AJAX action. Insufficient validation of the loadFile parameter allows authenticated high-privilege users to read files outside the intended log file scope. CVSS is 4.9, driven by high confidentiality impact but requiring high privileges.
Likely exposure
Exposure is limited to WordPress sites running ShortPixel Image Optimizer versions up to and including 6.4.2. Exploitation requires a valid account with Editor-level privileges or higher. Sites with many content editors, weak role governance, or compromised editor accounts have higher practical risk.
Exploitation context
The source bundle does not show CISA KEV listing or other cited evidence of active exploitation. The vulnerability is network-accessible through WordPress AJAX functionality, but requires authenticated high-privilege access. It enables file reading, not direct file modification or code execution based on the provided sources.
Researcher notes
Public references identify the vulnerable parameter, AJAX action, code locations, and a related WordPress Trac changeset. The provided evidence does not include exploit-in-the-wild confirmation. The exact fixed version is not explicitly stated in the bundle beyond the vulnerable range ending at 6.4.2.
Mitigation direction
- Identify all WordPress sites using ShortPixel Image Optimizer.
- Upgrade the plugin beyond 6.4.2 if a vendor-fixed release is available.
- If no fixed release is confirmed, follow vendor guidance or temporarily disable the plugin.
- Restrict Editor and Administrator accounts to trusted users only.
- Rotate exposed secrets if file access is suspected.
Validation and detection
- Check installed ShortPixel Image Optimizer versions across WordPress sites.
- Confirm whether any instance is at or below version 6.4.2.
- Review WordPress users with Editor, Administrator, or higher-equivalent access.
- Review logs for unusual loadLogFile AJAX activity by privileged users.
- Inspect vendor changelog or WordPress Trac changeset for remediation confirmation.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-1246 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
- 4.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/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:H/UI:N/S:U/C:H/I:N/A:N1.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/03cb41d2-67c8-457f-8d85-7aede8e12d44?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/tags/6.4.1/class/Controller/AjaxController.php#L309CVE reference
- https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/tags/6.4.1/class/Controller/BulkController.php#L200CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3449706%40shortpixel-image-optimiser&new=3449706%40shortpixel-image-optimiser&sfp_email=&sfph_mail=CVE 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 Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.