Security readout for executives and security teams
Plain-English summary
CVE-2025-31453 is a stored cross-site scripting issue in the WordPress YouTube SimpleGallery plugin through version 2.0.6. An attacker with low privileges could store unsafe content that runs in another user's browser after interaction. This can affect confidentiality, integrity, and availability at a limited level.
Executive priority
Treat as a moderate-priority web application risk. Address within the normal vulnerability remediation window, faster for public sites, sites with many content editors, or sites where admin sessions are business-critical.
Technical view
The CVE describes CWE-79 improper input neutralization during web page generation in youtube-simplegallery. CVSS 3.1 is 6.5 with AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L, indicating network reachability, low attack complexity, required privileges, required user interaction, and changed scope.
Likely exposure
Exposure is limited to WordPress sites running Stian Andreassen YouTube SimpleGallery, package youtube-simplegallery, from unspecified earlier versions through 2.0.6. The bundle does not identify other affected products or platforms.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates exploitation requires low privileges and user interaction, so risk depends heavily on who can create or modify plugin-controlled content.
Researcher notes
Evidence is limited to the CVE data and Patchstack reference. No patch version, exploit activity, or detailed vulnerable parameter is provided in the bundle. Avoid assumptions beyond stored XSS in YouTube SimpleGallery through 2.0.6.
Mitigation direction
- Inventory WordPress sites for the youtube-simplegallery plugin.
- Verify whether installed versions are 2.0.6 or older.
- Check Patchstack and vendor guidance for a patched version or workaround.
- Disable or remove the plugin where business use is not required.
- Restrict plugin editing privileges to trusted users only.
Validation and detection
- Confirm plugin name and version from WordPress administrative inventory.
- Review affected pages for unexpected script content or unauthorized edits.
- Check user roles that can modify YouTube SimpleGallery content.
- Monitor CVE and Patchstack entries for patch or exploitation updates.
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-2025-31453 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.