CVE-2024-47889

MEDIUMNVD 6.66.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.6 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 45% 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, nvd
6.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.6Exploit: NoneExposed: 0

A fix is available — apply it.

Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the block_format helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.

CVSS v3
6.6
EG Score
6.6(medium)
EG Risk
—
EPSS
57.3%
KEV
Not listed

Published

October 16, 2024

Last Modified

April 15, 2026

References (5)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubunturuby-railties (2:4.2.10-0ubuntu4+esm1) @ bionic2026-06-08ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFixed inDependents
actionmailer7.2.0, 7.2.17.2.1.1—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× in last 7d / 43× 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.

Showing the most recent 100 of 117 total refreshes for this CVE.

  1. 2026-07-22 14:07 UTCEPSS rescore
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-21 15:23 UTCEPSS rescore
  4. 2026-07-20 17:06 UTCEPSS rescore
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  11. 2026-07-16 17:02 UTCEPSS rescore
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  14. 2026-07-15 01:59 UTCEPSS rescore
  15. 2026-07-15 01:59 UTCEPSS rescore
  16. 2026-07-14 09:10 UTCOSV refresh
  17. 2026-07-13 22:29 UTCEPSS rescore
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  1. 2026-07-06 16:26 UTCEPSS rescore
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  5. 2026-07-01 15:05 UTCEPSS rescore
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  7. 2026-06-29 14:05 UTCEPSS rescore
  8. 2026-06-28 14:07 UTCEPSS rescore
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  11. 2026-06-27 03:07 UTCEPSS rescore
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  13. 2026-06-26 10:07 UTCOSV refresh
  14. 2026-06-25 13:49 UTCEPSS rescore
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  17. 2026-06-23 21:32 UTCEPSS rescore
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  19. 2026-06-22 14:25 UTCEPSS rescore
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  21. 2026-06-21 14:56 UTCEPSS rescore
  22. 2026-06-21 01:59 UTCEPSS rescore
  23. 2026-06-21 01:58 UTCEPSS rescore
  24. 2026-06-19 19:25 UTCEPSS rescore
  25. 2026-06-18 17:52 UTCEPSS rescore
  26. 2026-06-18 17:52 UTCEPSS rescore
  27. 2026-06-17 17:52 UTCEPSS rescore
  28. 2026-06-17 17:52 UTCEPSS rescore
  29. 2026-06-16 17:52 UTCEPSS rescore
  30. 2026-06-16 17:52 UTCEPSS rescore
  31. 2026-06-15 17:47 UTCEPSS rescore
  32. 2026-06-14 23:17 UTCEPSS rescore
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  38. 2026-06-11 13:59 UTCEPSS rescore
  39. 2026-06-10 22:18 UTCEPSS rescore
  40. 2026-06-10 13:21 UTCEPSS rescore
  41. 2026-06-08 16:42 UTCEG score recompute▲ 6.60
  42. 2026-06-08 16:42 UTCVendor advisory
  43. 2026-06-08 14:16 UTCEPSS rescore
  44. 2026-06-08 14:16 UTCEPSS rescore
  45. 2026-06-07 15:24 UTCEPSS rescore
  46. 2026-06-07 15:24 UTCEPSS rescore
  47. 2026-06-06 13:46 UTCEPSS rescore
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  49. 2026-06-05 22:46 UTCEPSS rescore
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  51. 2026-06-05 06:09 UTCEPSS rescore
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  53. 2026-06-04 13:11 UTCEPSS rescore
  54. 2026-06-04 13:11 UTCEPSS rescore
  55. 2026-06-04 10:09 UTCOSV refresh
  56. 2026-06-02 20:12 UTCEPSS rescore
  57. 2026-06-01 13:51 UTCEPSS rescore
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  59. 2026-05-31 22:30 UTCEPSS rescore
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  61. 2026-05-31 00:16 UTCEPSS rescore
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  63. 2026-05-29 13:43 UTCEPSS rescore
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  74. 2026-05-22 21:16 UTCEPSS rescore
  75. 2026-05-22 21:16 UTCEPSS rescore

Frequently asked(5)

What is CVE-2024-47889?
CVE-2024-47889 is a medium vulnerability published on October 16, 2024. Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the blockformat helper in Action Mailer. Carefully crafted text can cause the blockformat helper to…
When was CVE-2024-47889 disclosed?
CVE-2024-47889 was first published in the National Vulnerability Database on October 16, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-47889 actively exploited?
CVE-2024-47889 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-47889?
CVE-2024-47889 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2024-47889?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-47889, 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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