CVE-2026-8905

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-06-24. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

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

The Osiris Signature Banner plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVSS v3
6.1
EG Score
6.1(high)
EPSS
3.3%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 25, 2026

References (5)

Vendor Advisories for CVE-2026-8905(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 23× in last 7d / 41× 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. 2026-07-06 22:04 UTCEG score recompute
  2. 2026-07-06 22:04 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 20:59 UTCEG score recompute
  7. 2026-07-05 20:59 UTCGHSA enrichment
  8. 2026-07-05 02:31 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 19:50 UTCEG score recompute
  11. 2026-07-04 19:50 UTCGHSA enrichment
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-03 18:45 UTCEG score recompute
  15. 2026-07-03 18:45 UTCGHSA enrichment
  16. 2026-07-02 17:41 UTCEG score recompute
  17. 2026-07-02 17:41 UTCGHSA enrichment
  18. 2026-07-01 16:29 UTCEG score recompute
  19. 2026-07-01 16:29 UTCGHSA enrichment
  20. 2026-07-01 15:07 UTCEPSS rescore
  21. 2026-06-30 23:22 UTCEPSS rescore
  22. 2026-06-30 15:24 UTCEG score recompute
  23. 2026-06-30 15:24 UTCGHSA enrichment
  24. 2026-06-29 14:19 UTCEG score recompute
  25. 2026-06-29 14:19 UTCGHSA enrichment
Show 16 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-28 14:07 UTCEPSS rescore
  3. 2026-06-28 13:15 UTCEG score recompute
  4. 2026-06-28 13:15 UTCGHSA enrichment
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 12:09 UTCEG score recompute
  7. 2026-06-27 12:09 UTCGHSA enrichment
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 11:02 UTCEG score recompute
  10. 2026-06-26 11:02 UTCGHSA enrichment
  11. 2026-06-25 13:50 UTCEPSS rescore
  12. 2026-06-25 08:37 UTCEG score recompute
  13. 2026-06-25 08:37 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-24 07:33 UTCEG score recompute
  16. 2026-06-24 07:29 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8905?
CVE-2026-8905 is a medium vulnerability published on June 24, 2026. The Osiris Signature Banner plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious…
When was CVE-2026-8905 disclosed?
CVE-2026-8905 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8905 actively exploited?
CVE-2026-8905 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8905?
CVE-2026-8905 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-8905?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8905, 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-2026-8905

Explore →

Is Your Infrastructure Affected by CVE-2026-8905?

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

Start Free Scan →Browse All CVEs