Security readout for executives and security teams
Plain-English summary
CVE-2025-56304 is a medium-severity cross-site scripting issue in YzmCMS through 7.3. A malicious Referer header can affect the register page, potentially running attacker-controlled script in a user's browser if interaction occurs. The sources do not name a fixed version or confirmed exploitation.
Executive priority
Treat as a moderate web application risk. Prioritize internet-facing registration pages because exploitation could affect user trust and session integrity, but urgency is below critical flaws due to required user interaction and no confirmed active exploitation.
Technical view
The CVE describes CWE-79 XSS in the YzmCMS register page through version 7.3, triggered through the Referer header. CVSS 3.1 is 6.1: network reachable, low complexity, no privileges, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.
Likely exposure
Organizations are most exposed if they run public YzmCMS registration pages on version 7.3 or earlier. The CVE metadata lacks structured vendor, product, version, or CPE entries, so asset validation requires local inventory and application review.
Exploitation context
CISA KEV status is false in the bundle, and no provided source confirms active exploitation. The issue is plausible for phishing or session-context abuse because it depends on browser execution and user interaction, but exploitation evidence is incomplete.
Researcher notes
The public record is sparse. The description identifies YzmCMS through 7.3 and a Referer-header XSS on the register page, but structured affected-product data and remediation status are missing. Avoid assuming a patch exists without vendor confirmation.
Mitigation direction
- Check YzmCMS vendor guidance and CVE references for a fixed release or advisory.
- Inventory internet-facing YzmCMS instances and identify versions 7.3 or earlier.
- If feasible, restrict or disable public registration until remediation is confirmed.
- Ensure untrusted headers are not reflected without context-appropriate output encoding.
- Monitor web logs for unusual Referer values hitting registration routes.
Validation and detection
- Confirm whether the application is YzmCMS and record its exact version.
- Verify whether the registration page is reachable by unauthenticated users.
- Review register-page code for Referer header reflection into HTML responses.
- Check whether deployed templates encode reflected header values safely.
- Document compensating controls if no vendor-fixed version is available.
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-2025-56304 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
- 6.1 (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: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
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:N2.82.7CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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
- https://www.yzmcms.com/CVE reference, mitre
- https://gitee.com/cyjsyj/cve/wikis/CVE-2025-56304?sort_id=14635721CVE reference, mitre
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.