Security readout for executives and security teams
Plain-English summary
CVE-2025-24599 is a reflected cross-site scripting issue in the Tribulant Software Newsletters WordPress plugin, package newsletters-lite, affecting versions through 4.9.9.6. An attacker may need a user to interact with a crafted link or page. Successful exploitation could expose data, alter page behavior, or disrupt user sessions within the affected site context.
Executive priority
Treat as a high-priority WordPress plugin issue for externally facing sites using Newsletters. It is not currently documented as actively exploited in the provided sources, but XSS in public WordPress plugins can create account, brand, and data exposure risk if left unresolved.
Technical view
The issue is CWE-79: improper neutralization of input during web page generation. CVSS 3.1 is 7.1 High: AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. The CVE describes unauthenticated network reachability with required user interaction and changed scope. Public sources identify affected Newsletters versions up to and including 4.9.9.6.
Likely exposure
Internet-facing WordPress sites using Tribulant Software Newsletters/newsletters-lite through version 4.9.9.6 are the primary exposure. Sites without this plugin, or running versions outside the affected range per vendor guidance, are not indicated as affected by the provided sources.
Exploitation context
The provided sources do not report active exploitation, and this CVE is not marked KEV. Reflected XSS typically depends on convincing a user to open a crafted URL or page. Risk is higher for sites with privileged administrators, logged-in users, or sensitive newsletter subscriber data.
Researcher notes
Evidence is limited to CVE metadata and Patchstack’s vulnerability entry. The bundle does not include payload details, proof-of-concept status, or a named fixed version. Avoid assuming exploit availability or remediation specifics beyond checking vendor/Patchstack guidance and validating plugin version exposure.
Mitigation direction
- Inventory WordPress sites for the Newsletters/newsletters-lite plugin.
- Check installed plugin versions against the affected range: through 4.9.9.6.
- Consult Tribulant Software or Patchstack guidance for fixed versions or recommended remediation.
- Update or disable the plugin if vendor guidance confirms exposure.
- Apply normal WordPress hardening and restrict administrator browsing from untrusted links.
Validation and detection
- Confirm whether newsletters-lite is installed on each WordPress instance.
- Record the exact plugin version from WordPress administration or asset inventory.
- Verify remediation status against vendor or Patchstack advisory details.
- Review web logs for unusual requests to plugin-related pages, without attempting exploitation.
- Confirm no business-critical site still runs an affected version.
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-2025-24599 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
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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.
SSVC decision data
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:N/UI:R/S:C/C:L/I:L/A:L2.83.7PatchstackVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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
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.