Security readout for executives and security teams
Plain-English summary
CVE-2026-2479 affects the Responsive Lightbox & Gallery WordPress plugin through version 2.7.1. A logged-in user with Author-level access or higher could cause the website server to make requests to arbitrary locations. The main business concern is exposure of internal services reachable from the web server, not direct unauthenticated takeover.
Executive priority
Handle in normal vulnerability remediation cycles, faster for sites with many content contributors or sensitive internal network access. This is not currently evidenced as exploited, but it can turn a compromised author account into internal network probing from the server.
Technical view
The flaw is an authenticated SSRF in ajax_upload_image() within the remote library image upload flow. Sources attribute it to substring-based hostname validation using strpos() instead of strict host comparison. CVSS is 5.0, with network access, low complexity, low privileges, no user interaction, changed scope, and low confidentiality impact.
Likely exposure
WordPress sites running Responsive Lightbox & Gallery versions up to and including 2.7.1 are potentially exposed if untrusted or compromised accounts have Author-level or higher privileges.
Exploitation context
The source bundle does not indicate active exploitation, and KEV is false. Exploitation requires authenticated Author-or-higher access, limiting broad drive-by risk. Impact depends on what internal endpoints or metadata services the WordPress server can reach.
Researcher notes
Focus review on ajax_upload_image() and hostname validation in class-remote-library.php. Compare affected tag code with trunk and changeset 3464566. Avoid assuming unauthenticated impact; the provided record states Author-level authentication is required.
Mitigation direction
- Inventory WordPress sites using Responsive Lightbox & Gallery.
- Upgrade beyond affected versions if a fixed vendor release is available.
- If no fix is available, follow vendor guidance and restrict plugin use.
- Limit Author-level access to trusted users only.
- Restrict server egress to internal services where operationally feasible.
Validation and detection
- Check installed plugin version across WordPress assets.
- Confirm whether any site runs version 2.7.1 or earlier.
- Review user roles for Author-level or higher access.
- Review web server egress paths to internal services.
- Monitor logs for unusual remote library image upload requests.
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-918: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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 lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-2479 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
- 5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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:L/UI:N/S:C/C:L/I:N/A:N3.11.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/44276b28-9509-4f59-936c-fff2ae404076?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.0/includes/class-remote-library.php#L329CVE reference
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/trunk/includes/class-remote-library.php#L329CVE reference
- https://plugins.trac.wordpress.org/changeset/3464566?contextall=1CVE 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.
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.