Security readout for executives and security teams
Plain-English summary
Picture Gallery 1.4.2 for WordPress can store malicious script in a plugin setting. If triggered, that script may run in another user’s browser, creating risk of account takeover, credential theft, or unauthorized site changes.
Executive priority
Treat as a moderate website security issue. Prioritize internet-facing WordPress sites, especially those with many authenticated users or sensitive administrator sessions.
Technical view
This is a stored cross-site scripting flaw, CWE-79, in the Access Control Edit Content URL field. The CVSS 3.1 score is 6.4 with low attack complexity, low privileges required, changed scope, and limited confidentiality and integrity impact.
Likely exposure
Exposure is limited to WordPress sites running the Picture Gallery plugin version 1.4.2. The source bundle does not identify other affected versions or a confirmed fixed version.
Exploitation context
The bundle includes an ExploitDB reference, so public exploit information exists. It is not listed in CISA KEV, and the supplied sources do not provide evidence of active exploitation.
Researcher notes
Evidence supports stored XSS in one named plugin version and field. The bundle does not prove active exploitation, broad version impact, or an upstream patch. Avoid assuming remediation beyond vendor guidance, removal, or access restriction.
Mitigation direction
- Inventory WordPress sites for Picture Gallery 1.4.2.
- Disable or remove the plugin where it is not business-critical.
- Check vendor and advisory pages for a fixed release or official mitigation.
- Limit plugin settings access to trusted administrators only.
- Review suspicious admin sessions and password-reset activity.
Validation and detection
- Confirm installed WordPress plugin names and versions on each site.
- Review Access Control settings for unexpected script content.
- Inspect relevant plugin options in backups or change history.
- Verify untrusted users cannot modify plugin settings.
- Retest after removal, upgrade, or configuration 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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 lookupCVE-2021-47951 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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:N3.12.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
5.1MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50187CVE reference, VulnCheck · exploit
- Product ReferenceCVE reference, VulnCheck · product
- VulnCheck Advisory: WordPress Picture Gallery 1.4.2 Stored XSS via Edit Content URLCVE reference, VulnCheck · third-party-advisory
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.