Security readout for executives and security teams
Plain-English summary
CVE-2021-39499 is a reported cross-site scripting issue in Qiong ICP EyouCMS 1.5.4. A remote attacker could inject script or HTML through the title parameter in the bind_email function. Business risk depends on whether the vulnerable user email-binding flow is exposed and used.
Executive priority
Prioritize if EyouCMS 1.5.4 is internet-facing or supports authenticated user self-service. Otherwise, handle through normal web application patch management after confirming exposure, because severity and exploitation evidence are incomplete.
Technical view
The CVE description identifies an XSS flaw in EyouCMS 1.5.4, specifically the bind_email function handling of the title parameter. The source bundle provides no CVSS score, CWE, CPE, patch version, or confirmed exploitation evidence. Public GitHub references are listed as supporting reports.
Likely exposure
Organizations running Qiong ICP EyouCMS 1.5.4 may be exposed if the affected bind_email user workflow is reachable by remote users. The provided affected-product metadata is incomplete, so exposure should be confirmed by asset inventory and version review.
Exploitation context
The bundle cites public GitHub references, but does not show CISA KEV listing or any source confirming active exploitation. Treat this as publicly disclosed with possible technical detail available, not as confirmed exploited in the wild.
Researcher notes
The record is sparse: no CVSS, CWE, CPE, patch, or mitigation is provided. Validate through source review and controlled testing. Do not assume broader version impact beyond EyouCMS 1.5.4 from the supplied evidence.
Mitigation direction
- Check EyouCMS vendor or project guidance for a confirmed fixed release.
- Upgrade only to a vendor-confirmed fixed version if available.
- Review title parameter handling for input validation and output encoding.
- Limit exposure of affected user workflows where operationally feasible.
- Monitor application logs for suspicious title parameter activity.
Validation and detection
- Inventory EyouCMS deployments and confirm exact versions.
- Identify whether bind_email is present and remotely reachable.
- Review code handling of the title parameter for unsafe rendering.
- Check public issue references for vendor response or fix status.
- Review recent logs for unusual script-like input patterns.
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
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CVE-2021-39499 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/eyoucms/eyoucms/issues/18CVE reference · x_refsource_MISC
- https://github.com/KietNA-HPT/CVECVE reference · x_refsource_MISC
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.