CVE-2026-34912

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-06-23. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
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 missing access control check when linking banners or campaigns to a zone through the zone-include.php script of Revive Adserver 6.0.6 and earlier, or via its API allows a low‑privileged user could link their zones to banners or campaigns owned by other managers on the same instance, resulting in inconsistent ownership relationships. Ownership validation has been added to ensure that banners and campaigns can only be linked to zones managed by the same account.

CVSS v3
4.3
EG Score
4.3(high)
EPSS
14.5%
KEV
Not listed

Published

June 23, 2026

Last Modified

June 23, 2026

Advisory Details (1)

Auto-updated Jun 23, 2026
No patch confirmed yet.
generic

HackerOne

https://hackerone.com/reports/3650504

Vendor Advisories for CVE-2026-34912(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 21× in last 7d / 45× 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 03:11 UTCEG score recompute
  2. 2026-07-07 03:11 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:32 UTCEG score recompute
  6. 2026-07-06 02:32 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-05 01:53 UTCEG score recompute
  11. 2026-07-05 01:53 UTCGHSA enrichment
  12. 2026-07-04 01:10 UTCEG score recompute
  13. 2026-07-04 01:09 UTCGHSA enrichment
  14. 2026-07-03 00:31 UTCEG score recompute
  15. 2026-07-03 00:31 UTCGHSA enrichment
  16. 2026-07-01 23:51 UTCEG score recompute
  17. 2026-07-01 23:51 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-06-30 23:22 UTCEPSS rescore
  20. 2026-06-30 23:11 UTCEG score recompute
  21. 2026-06-30 23:11 UTCGHSA enrichment
  22. 2026-06-29 22:32 UTCEG score recompute
  23. 2026-06-29 22:32 UTCGHSA enrichment
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 20 more
  1. 2026-06-28 21:54 UTCEG score recompute
  2. 2026-06-28 21:54 UTCGHSA enrichment
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-27 21:15 UTCEG score recompute
  8. 2026-06-27 21:15 UTCGHSA enrichment
  9. 2026-06-27 03:08 UTCEPSS rescore
  10. 2026-06-26 20:36 UTCEG score recompute
  11. 2026-06-26 20:36 UTCGHSA enrichment
  12. 2026-06-25 19:58 UTCEG score recompute
  13. 2026-06-25 19:58 UTCGHSA enrichment
  14. 2026-06-25 13:49 UTCEPSS rescore
  15. 2026-06-25 13:49 UTCEPSS rescore
  16. 2026-06-24 19:19 UTCEG score recompute
  17. 2026-06-24 19:19 UTCGHSA enrichment
  18. 2026-06-24 14:05 UTCEPSS rescore
  19. 2026-06-23 17:36 UTCEG score recompute
  20. 2026-06-23 17:34 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34912?
CVE-2026-34912 is a medium vulnerability published on June 23, 2026. A missing access control check when linking banners or campaigns to a zone through the zone-include.php script of Revive Adserver 6.0.6 and earlier, or via its API allows a low‑privileged user could link their zones to banners or campaigns owned by other managers on the same instance, resulting in…
When was CVE-2026-34912 disclosed?
CVE-2026-34912 was first published in the National Vulnerability Database on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34912 actively exploited?
CVE-2026-34912 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-34912?
CVE-2026-34912 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-34912?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34912, 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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