CVE-2026-42547

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
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.

IRIS is a web collaborative platform that helps incident responders share technical details during investigations. In versions prior to 2.4.28, users can create alerts for customers that are not assigned to them. This can be abused to falsely attribute fake alerts to customers. In combination with Cross-Site Scripting, this can also be used to exfiltrate alerts from other customers. Version 2.4.28 contains a patch.

CVSS v3
5.4
EG Score
5.4(medium)
EPSS
7.1%
KEV
Not listed

Published

June 4, 2026

Last Modified

June 8, 2026

Advisory Details (2)

Auto-updated Jun 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Alerts Can be Falsely Attributed to Customers · Advisory · dfir-iris/iris-web · GitHub

https://github.com/dfir-iris/iris-web/security/advisories/GHSA-8hwq-v6vm-9grr
generic Patch Available🟡 PoC Available

oss-security - [SBA-ADV-20260128-05] CVE-2026-42547: DFIR-IRIS before 2.4.28 Alerts Can be Falsely Attributed to Customers

http://www.openwall.com/lists/oss-security/2026/05/19/12

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 55× 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. 2026-07-14 03:20 UTCEG score recompute
  2. 2026-07-13 22:30 UTCEPSS rescore
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-12 05:46 UTCEPSS rescore
  5. 2026-07-11 11:44 UTCEG score recompute
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-08 15:15 UTCEPSS rescore
  9. 2026-07-08 09:30 UTCEG score recompute
  10. 2026-07-07 13:46 UTCEPSS rescore
  11. 2026-07-06 16:27 UTCEPSS rescore
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 02:23 UTCEPSS rescore
  14. 2026-07-06 02:23 UTCEPSS rescore
  15. 2026-07-06 02:17 UTCEG score recompute
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-03 19:10 UTCEG score recompute
  19. 2026-07-02 18:20 UTCEG score recompute
  20. 2026-07-01 19:01 UTCEG score recompute
  21. 2026-07-01 15:06 UTCEPSS rescore
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 20:04 UTCEG score recompute
  24. 2026-06-29 19:24 UTCEG score recompute
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 55 more
  1. 2026-06-28 20:12 UTCEG score recompute
  2. 2026-06-28 14:07 UTCEPSS rescore
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 21:14 UTCEG score recompute
  5. 2026-06-27 03:08 UTCEPSS rescore
  6. 2026-06-26 22:15 UTCEG score recompute
  7. 2026-06-25 23:18 UTCEG score recompute
  8. 2026-06-25 13:49 UTCEPSS rescore
  9. 2026-06-25 13:49 UTCEPSS rescore
  10. 2026-06-25 00:20 UTCEG score recompute
  11. 2026-06-24 14:05 UTCEPSS rescore
  12. 2026-06-24 01:07 UTCEG score recompute
  13. 2026-06-23 21:33 UTCEPSS rescore
  14. 2026-06-23 01:53 UTCEG score recompute
  15. 2026-06-22 14:25 UTCEPSS rescore
  16. 2026-06-22 14:25 UTCEPSS rescore
  17. 2026-06-21 14:56 UTCEPSS rescore
  18. 2026-06-21 14:56 UTCEPSS rescore
  19. 2026-06-21 01:59 UTCEPSS rescore
  20. 2026-06-19 19:46 UTCEG score recompute
  21. 2026-06-19 19:25 UTCEPSS rescore
  22. 2026-06-18 17:52 UTCEPSS rescore
  23. 2026-06-18 17:52 UTCEPSS rescore
  24. 2026-06-18 08:00 UTCEG score recompute
  25. 2026-06-17 17:53 UTCEPSS rescore
  26. 2026-06-17 09:02 UTCEG score recompute
  27. 2026-06-16 17:52 UTCEPSS rescore
  28. 2026-06-16 10:04 UTCEG score recompute
  29. 2026-06-15 17:49 UTCEPSS rescore
  30. 2026-06-15 11:06 UTCEG score recompute
  31. 2026-06-14 11:44 UTCEG score recompute
  32. 2026-06-13 23:00 UTCEPSS rescore
  33. 2026-06-13 12:47 UTCEG score recompute
  34. 2026-06-12 23:12 UTCEPSS rescore
  35. 2026-06-12 23:12 UTCEPSS rescore
  36. 2026-06-12 13:49 UTCEG score recompute
  37. 2026-06-11 14:51 UTCEG score recompute
  38. 2026-06-11 14:00 UTCEPSS rescore
  39. 2026-06-10 22:18 UTCEPSS rescore
  40. 2026-06-10 15:55 UTCEG score recompute
  41. 2026-06-10 13:22 UTCEPSS rescore
  42. 2026-06-10 13:22 UTCEPSS rescore
  43. 2026-06-09 16:57 UTCEG score recompute
  44. 2026-06-08 18:00 UTCEG score recompute
  45. 2026-06-08 14:17 UTCEPSS rescore
  46. 2026-06-08 14:17 UTCEPSS rescore
  47. 2026-06-07 18:21 UTCEG score recompute
  48. 2026-06-07 15:25 UTCEPSS rescore
  49. 2026-06-07 15:25 UTCEPSS rescore
  50. 2026-06-06 19:24 UTCEG score recompute
  51. 2026-06-06 13:47 UTCEPSS rescore
  52. 2026-06-06 13:47 UTCEPSS rescore
  53. 2026-06-05 22:47 UTCEPSS rescore
  54. 2026-06-05 20:27 UTCEG score recompute
  55. 2026-06-04 21:30 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42547?
CVE-2026-42547 is a medium vulnerability published on June 4, 2026. IRIS is a web collaborative platform that helps incident responders share technical details during investigations. In versions prior to 2.4.28, users can create alerts for customers that are not assigned to them. This can be abused to falsely attribute fake alerts to customers. In combination with…
When was CVE-2026-42547 disclosed?
CVE-2026-42547 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42547 actively exploited?
CVE-2026-42547 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42547?
CVE-2026-42547 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-42547?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42547, 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-2026-42547

Explore →

Is Your Infrastructure Affected by CVE-2026-42547?

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

Start Free Scan →Browse All CVEs