Security readout for executives and security teams
Plain-English summary
CVE-2018-15582 is a cross-site scripting issue in gnuboard5 before 5.3.1.6. An attacker could inject script or HTML through SMS admin number-book pages, potentially affecting users who view the resulting content. The public sources do not show active exploitation or a severity score.
Executive priority
Treat as a moderate priority if gnuboard5 is in use, especially where admin pages are reachable by untrusted networks. Prioritize version verification and upgrade planning; there is no source-backed evidence of active exploitation.
Technical view
The CVE identifies XSS in adm/sms_admin/num_book_write.php and adm/sms_admin/num_book_update.php in gnuboard5 before 5.3.1.6. The linked upstream commit is the only provided fix evidence. No CVSS, CWE, authentication requirement, or exploit maturity details are included in the bundle.
Likely exposure
Exposure is likely limited to deployments running gnuboard5 before 5.3.1.6 with the SMS admin number-book functionality present. Public internet exposure depends on how the admin area is deployed and protected; the sources do not state this.
Exploitation context
The CVE says remote attackers can inject arbitrary web script or HTML. There is no KEV listing and no cited source in the bundle indicating active exploitation, public exploit use, or exploitation at scale.
Researcher notes
The source bundle is sparse: no CVSS vector, CWE, detailed root cause, or exploit prerequisites are provided. Analysis should stay anchored to the two affected files, the gnuboard5 before-5.3.1.6 scope, and the upstream commit evidence.
Mitigation direction
- Upgrade gnuboard5 to 5.3.1.6 or later where applicable.
- Review the linked upstream commit and vendor release guidance.
- Restrict access to administrative SMS pages to trusted users.
- Monitor affected endpoints for unusual script-like input patterns.
Validation and detection
- Inventory gnuboard5 instances and confirm their installed versions.
- Check whether the two affected PHP files exist in deployed code.
- Compare deployed code against the linked upstream fix commit.
- Review access logs for requests to the affected admin endpoints.
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-2018-15582 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/gnuboard/gnuboard5/commit/b1fc952c7600b825c4b02e2789ddafdea18c8d13#diff-737f14a5f5bdad53c5ce9b3ec628bf6dCVE reference · x_refsource_CONFIRM
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.