CVE-2026-48780

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 88% 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
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

Forem is open source software for building communities. Prior to commit a2ab6d4, a maliciously crafted email address could allow an attacker to bypass domain allowlist or denylist restrictions and gain access to invite-only forem deployments. The issue is patched as of a2ab6d4. As a workaround, some SMTP servers and email delivery providers may drop or refuse to send maliciously crafted email addresses.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
12.2%
KEV
Not listed

Published

June 16, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Jun 16, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Bypass of email address domain restrictions · Advisory · forem/forem · GitHub

https://github.com/forem/forem/security/advisories/GHSA-3g4h-9h37-mpx6
github_commit

commit a2ab6d409d26 (forem/forem)

Fix landed in forem/forem commit a2ab6d409d26 — awaiting tagged release

https://github.com/forem/forem/commit/a2ab6d409d2676eb0711ecbd737192043125b437

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 92× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 15:28 UTCEG score recompute
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 01:18 UTCEG score recompute
  5. 2026-07-14 11:45 UTCEG score recompute
  6. 2026-07-13 23:22 UTCEG score recompute
  7. 2026-07-13 22:30 UTCEPSS rescore
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  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-12 22:06 UTCEG score recompute
  11. 2026-07-12 09:43 UTCEG score recompute
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-11 21:27 UTCEG score recompute
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  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-10 20:54 UTCEG score recompute
  17. 2026-07-10 08:38 UTCEG score recompute
  18. 2026-07-09 19:55 UTCEG score recompute
  19. 2026-07-09 19:10 UTCEPSS rescore
  20. 2026-07-09 02:02 UTCEG score recompute
  21. 2026-07-08 15:16 UTCEPSS rescore
  22. 2026-07-08 13:22 UTCEG score recompute
  23. 2026-07-08 00:06 UTCEG score recompute
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-07 11:46 UTCEG score recompute
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  1. 2026-07-06 23:14 UTCEG score recompute
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-05 22:38 UTCEG score recompute
  5. 2026-07-05 10:21 UTCEG score recompute
  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-04 21:36 UTCEG score recompute
  8. 2026-07-04 09:21 UTCEG score recompute
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-03 15:45 UTCEG score recompute
  11. 2026-07-03 03:29 UTCEG score recompute
  12. 2026-07-02 15:13 UTCEG score recompute
  13. 2026-07-02 02:55 UTCEG score recompute
  14. 2026-07-01 15:07 UTCEPSS rescore
  15. 2026-07-01 14:38 UTCEG score recompute
  16. 2026-07-01 02:22 UTCEG score recompute
  17. 2026-06-30 23:22 UTCEPSS rescore
  18. 2026-06-30 14:06 UTCEG score recompute
  19. 2026-06-30 01:43 UTCEG score recompute
  20. 2026-06-29 14:06 UTCEPSS rescore
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-29 13:27 UTCEG score recompute
  23. 2026-06-29 01:11 UTCEG score recompute
  24. 2026-06-28 14:07 UTCEPSS rescore
  25. 2026-06-28 12:55 UTCEG score recompute
  26. 2026-06-28 04:56 UTCEPSS rescore
  27. 2026-06-28 04:56 UTCEPSS rescore
  28. 2026-06-28 00:40 UTCEG score recompute
  29. 2026-06-27 12:23 UTCEG score recompute
  30. 2026-06-27 03:08 UTCEPSS rescore
  31. 2026-06-27 00:06 UTCEG score recompute
  32. 2026-06-26 11:51 UTCEG score recompute
  33. 2026-06-25 22:31 UTCEG score recompute
  34. 2026-06-25 13:49 UTCEPSS rescore
  35. 2026-06-25 10:14 UTCEG score recompute
  36. 2026-06-24 21:53 UTCEG score recompute
  37. 2026-06-24 14:05 UTCEPSS rescore
  38. 2026-06-24 09:37 UTCEG score recompute
  39. 2026-06-23 21:33 UTCEPSS rescore
  40. 2026-06-23 21:33 UTCEPSS rescore
  41. 2026-06-23 21:14 UTCEG score recompute
  42. 2026-06-23 08:57 UTCEG score recompute
  43. 2026-06-22 20:41 UTCEG score recompute
  44. 2026-06-22 14:25 UTCEPSS rescore
  45. 2026-06-22 14:25 UTCEPSS rescore
  46. 2026-06-22 08:26 UTCEG score recompute
  47. 2026-06-21 20:10 UTCEG score recompute
  48. 2026-06-21 14:56 UTCEPSS rescore
  49. 2026-06-21 14:56 UTCEPSS rescore
  50. 2026-06-21 07:45 UTCEG score recompute
  51. 2026-06-21 01:59 UTCEPSS rescore
  52. 2026-06-21 01:59 UTCEPSS rescore
  53. 2026-06-20 19:26 UTCEG score recompute
  54. 2026-06-20 06:39 UTCEG score recompute
  55. 2026-06-19 19:26 UTCEPSS rescore
  56. 2026-06-19 19:26 UTCEPSS rescore
  57. 2026-06-19 18:19 UTCEG score recompute
  58. 2026-06-19 06:02 UTCEG score recompute
  59. 2026-06-18 17:52 UTCEPSS rescore
  60. 2026-06-18 17:52 UTCEPSS rescore
  61. 2026-06-18 17:44 UTCEG score recompute
  62. 2026-06-18 05:13 UTCEG score recompute
  63. 2026-06-17 17:53 UTCEPSS rescore
  64. 2026-06-17 16:52 UTCEG score recompute
  65. 2026-06-17 04:03 UTCEG score recompute
  66. 2026-06-16 15:47 UTCEG score recompute
  67. 2026-06-16 15:47 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-48780?
CVE-2026-48780 is a high vulnerability published on June 16, 2026. Forem is open source software for building communities. Prior to commit a2ab6d4, a maliciously crafted email address could allow an attacker to bypass domain allowlist or denylist restrictions and gain access to invite-only forem deployments. The issue is patched as of a2ab6d4. As a workaround,…
When was CVE-2026-48780 disclosed?
CVE-2026-48780 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48780 actively exploited?
CVE-2026-48780 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48780?
CVE-2026-48780 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-48780?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48780, 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.

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