Security readout for executives and security teams
Plain-English summary
CVE-2026-27057 is a stored cross-site scripting issue in the WordPress Penci Filter Everything plugin through version 1.7. An authenticated user could store malicious script that runs when another user views affected content. This can affect account trust, site integrity, and visitor confidence.
Executive priority
Treat as a near-term WordPress maintenance item, not an emergency based on current sources. Prioritize public or multi-author sites because stored XSS can damage trust, enable session abuse, or alter displayed content if a lower-privileged account is misused.
Technical view
The CVE describes CWE-79 improper input neutralization during web page generation in PenciDesign Penci Filter Everything. CVSS 3.1 is 6.5: network-reachable, low complexity, low privileges required, user interaction required, and changed scope with low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites using Penci Filter Everything version 1.7 or earlier. The CVSS vector indicates exploitation requires a low-privileged authenticated user and a victim interaction, reducing broad unauthenticated risk.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Patchstack and CVE sources classify the issue as stored XSS, but no exploit details or observed attacks are provided in the supplied materials.
Researcher notes
The description states affected versions are through 1.7, while the structured affected entry is sparse and lists version data unusually. No patch version, workaround, or exploitation evidence is included in the provided bundle. Validate details against vendor and Patchstack before closing exposure.
Mitigation direction
- Identify WordPress sites running Penci Filter Everything.
- Check the installed plugin version against 1.7 or earlier.
- Review PenciDesign or Patchstack guidance for an available fixed version.
- Update the plugin if vendor guidance identifies a patched release.
- Disable or remove the plugin where business need is low.
- Restrict low-privileged content-management access until remediation is complete.
Validation and detection
- Confirm whether Penci Filter Everything is installed on each WordPress site.
- Record the exact plugin version from WordPress administration or asset inventory.
- Verify remediation status against vendor or Patchstack advisory information.
- Review user roles with plugin or content editing access.
- Monitor WordPress security logs for unusual content 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-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-2026-27057 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Source materials
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.