CVE-2026-15202

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-07-09. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A security vulnerability has been detected in YzmCMS up to 7.5. Affected is the function get_url of the file /yzmphp/yzmphp.php of the component Header Handler. The manipulation of the argument HTTP_HOST leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
4.3
EG Score
4.3(high)
EPSS
17.8%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 10, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

zmcms-host-header-injection-poc · GitHub

https://gist.github.com/188452/72d03d030ee3cbfee2642badfa9dce33

Vendor Advisories for CVE-2026-15202(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-16 00:30 UTCEG score recompute
  2. 2026-07-16 00:30 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 23:25 UTCEG score recompute
  6. 2026-07-14 23:25 UTCGHSA enrichment
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 22:18 UTCEG score recompute
  9. 2026-07-13 22:18 UTCGHSA enrichment
  10. 2026-07-13 06:12 UTCEPSS rescore
  11. 2026-07-12 21:12 UTCEG score recompute
  12. 2026-07-12 21:12 UTCGHSA enrichment
  13. 2026-07-12 05:46 UTCEPSS rescore
  14. 2026-07-11 20:07 UTCEG score recompute
  15. 2026-07-11 20:07 UTCGHSA enrichment
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-10 19:02 UTCEG score recompute
  18. 2026-07-10 19:02 UTCGHSA enrichment
  19. 2026-07-09 19:07 UTCNVD updateCVSS v4 → 2.1
  20. 2026-07-09 17:56 UTCEG score recompute
  21. 2026-07-09 17:56 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15202?
CVE-2026-15202 is a medium vulnerability published on July 9, 2026. A security vulnerability has been detected in YzmCMS up to 7.5. Affected is the function geturl of the file /yzmphp/yzmphp.php of the component Header Handler. The manipulation of the argument HTTPHOST leads to cross site scripting. The attack may be initiated remotely. The exploit has been…
When was CVE-2026-15202 disclosed?
CVE-2026-15202 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15202 actively exploited?
CVE-2026-15202 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15202?
CVE-2026-15202 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-15202?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15202, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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