CVE-2026-50740

MEDIUMNVD 5.46.1▲
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-06-26. NVD baseline CVSS 5.4; sources differ by 0.7.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

A missing sanitisation vulnerability of user input in the zone-include.php script exists in Revive Adserver 6.0.7 and earlier. A low‑privileged user could exploit the refresh parameter of the iFrame invocation tag to perform reflected XSS attacks.

CVSS v3
5.4
EG Score
6.1(high)
EPSS
12.8%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 29, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
No patch confirmed yet.
generic

HackerOne

https://hackerone.com/reports/3780806

Vendor Advisories for CVE-2026-50740(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 39× 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. 2026-07-07 05:47 UTCEG score recompute
  2. 2026-07-07 05:47 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 07:36 UTCEG score recompute
  5. 2026-07-06 07:36 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 09:24 UTCEG score recompute
  8. 2026-07-05 09:24 UTCGHSA enrichment
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 11:14 UTCEG score recompute
  11. 2026-07-04 11:13 UTCGHSA enrichment
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 13:03 UTCEG score recompute
  14. 2026-07-03 13:03 UTCGHSA enrichment
  15. 2026-07-02 14:54 UTCEG score recompute
  16. 2026-07-02 14:54 UTCGHSA enrichment
  17. 2026-07-01 16:44 UTCEG score recompute
  18. 2026-07-01 16:44 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 18:35 UTCEG score recompute
  22. 2026-06-30 18:35 UTCGHSA enrichment
  23. 2026-06-29 21:26 UTCNVD updateCVSS v3 → 5.4
  24. 2026-06-29 20:24 UTCEG score recompute
  25. 2026-06-29 20:24 UTCGHSA enrichment
Show 14 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 14:06 UTCEPSS rescore
  3. 2026-06-28 22:14 UTCEG score recompute
  4. 2026-06-28 22:14 UTCGHSA enrichment
  5. 2026-06-28 14:07 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-28 04:56 UTCEPSS rescore
  8. 2026-06-28 00:05 UTCEG score recompute
  9. 2026-06-28 00:05 UTCGHSA enrichment
  10. 2026-06-27 03:08 UTCEPSS rescore
  11. 2026-06-27 01:55 UTCEG score recompute
  12. 2026-06-27 01:55 UTCGHSA enrichment
  13. 2026-06-26 03:46 UTCEG score recompute
  14. 2026-06-26 03:46 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-50740?
CVE-2026-50740 is a medium vulnerability published on June 26, 2026. A missing sanitisation vulnerability of user input in the zone-include.php script exists in Revive Adserver 6.0.7 and earlier. A low‑privileged user could exploit the refresh parameter of the iFrame invocation tag to perform reflected XSS attacks.
When was CVE-2026-50740 disclosed?
CVE-2026-50740 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50740 actively exploited?
CVE-2026-50740 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-50740?
CVE-2026-50740 has a CVSS v3 base score of 5.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.1.
How do I remediate CVE-2026-50740?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50740, 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

Explore the affected products and dependency analysis for CVE-2026-50740

Explore →

Is Your Infrastructure Affected by CVE-2026-50740?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs