CVE-2025-23959: WordPress Good Old Gallery Plugin <= 2.1.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Linus Lundahl Good Old Gallery good-old-gallery allows Reflected XSS.This issue affects Good Old Gallery: from n/a through <= 2.1.2.
Security readout for executives and security teams
Plain-English summary
CVE-2025-23959 is a reflected cross-site scripting issue in the WordPress Good Old Gallery plugin through version 2.1.2. An attacker could cause a user to open a crafted link and run script in that user’s browser. Sources do not show known active exploitation.
Executive priority
Treat this as a high-priority WordPress plugin exposure, especially for sites with privileged editors or administrators. It is less urgent than a no-click server compromise, but reflected XSS can support credential theft, session abuse, or content tampering when users are successfully targeted.
Technical view
The vulnerability is CWE-79 improper input neutralization during web page generation. CVSS 3.1 is 7.1 high: network reachable, low complexity, no privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to WordPress sites running Good Old Gallery version 2.1.2 or earlier. The source bundle does not identify affected routes, parameters, installation counts, or whether later versions exist.
Exploitation context
The CVE is not listed as KEV in the provided bundle. Exploitation requires user interaction, typically a victim following a malicious link. No source in the bundle confirms exploitation in the wild or provides verified exploit availability.
Researcher notes
The provided data names Good Old Gallery through 2.1.2 but does not include vulnerable parameter details, proof-of-concept status, or a fixed version. One affected entry is sparse and inconsistent, so validate against the CVE record, Patchstack, and local plugin metadata.
Mitigation direction
Inventory WordPress sites for the Good Old Gallery plugin.
Confirm whether installed versions are 2.1.2 or earlier.
Check vendor, WordPress plugin, and Patchstack guidance for a fixed release.
If no supported fix exists, consider disabling the plugin after business review.
Prioritize protections for administrator and content editor sessions.
Validation and detection
Review WordPress plugin inventory and version data.
Check whether Good Old Gallery is active on public sites.
Look for vendor or Patchstack advisory updates after 2026-05-11.
Review web logs for unusual requests to plugin-controlled pages.
Confirm any compensating control is documented and time-bound.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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 · medium confidence lookup
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.
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.
1CVSS vectors
3Timeline events
1ADP providers
2Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total
CVSS vector scores
1 official score
We 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.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-79 · source CWE mapping
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.