CVE-2026-44837

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 67% 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
Elevated
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 3.0.0 to 4.9.0, the system test entrypoint canonicalizes a user-controlled file path with File.realpath, then checks whether the resolved path starts with the temp directory path. This is not a safe containment check because sibling directories can share the same string prefix. This vulnerability is fixed in 4.9.0.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
33.2%
KEV
Not listed

Published

May 26, 2026

Last Modified

June 2, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

System Test Entry Point Path Check Allows Sibling Directory Escape · Advisory · ViewComponent/view_component · GitHub

https://github.com/ViewComponent/view_component/security/advisories/GHSA-hg3h-g7xc-f7vp

Vendor Advisories for CVE-2026-44837(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFixed inDependents
view_component3.0.0 ... 4.8.0 (54 versions)4.9.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 54× 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. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-07 13:46 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-01 15:07 UTCEPSS rescore
  9. 2026-07-01 12:11 UTCEG score recompute
  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-29 14:47 UTCEG score recompute
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-29 14:06 UTCEPSS rescore
  14. 2026-06-28 22:45 UTCEG score recompute
  15. 2026-06-28 14:07 UTCEPSS rescore
  16. 2026-06-28 07:31 UTCEG score recompute
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-27 18:51 UTCEG score recompute
  20. 2026-06-27 07:01 UTCEG score recompute
  21. 2026-06-27 03:08 UTCEPSS rescore
  22. 2026-06-26 17:31 UTCEG score recompute
  23. 2026-06-25 23:10 UTCEG score recompute
  24. 2026-06-25 13:49 UTCEPSS rescore
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 71 more
  1. 2026-06-25 11:15 UTCEG score recompute
  2. 2026-06-24 14:05 UTCEPSS rescore
  3. 2026-06-23 21:33 UTCEPSS rescore
  4. 2026-06-22 14:25 UTCEPSS rescore
  5. 2026-06-22 14:25 UTCEPSS rescore
  6. 2026-06-21 14:56 UTCEPSS rescore
  7. 2026-06-21 14:56 UTCEPSS rescore
  8. 2026-06-21 01:59 UTCEPSS rescore
  9. 2026-06-19 19:25 UTCEPSS rescore
  10. 2026-06-18 17:52 UTCEPSS rescore
  11. 2026-06-18 17:52 UTCEPSS rescore
  12. 2026-06-17 21:37 UTCEG score recompute
  13. 2026-06-17 17:53 UTCEPSS rescore
  14. 2026-06-17 09:56 UTCEG score recompute
  15. 2026-06-16 21:50 UTCEG score recompute
  16. 2026-06-16 17:52 UTCEPSS rescore
  17. 2026-06-16 10:11 UTCEG score recompute
  18. 2026-06-15 22:27 UTCEG score recompute
  19. 2026-06-15 17:49 UTCEPSS rescore
  20. 2026-06-15 08:07 UTCEG score recompute
  21. 2026-06-14 20:28 UTCEG score recompute
  22. 2026-06-14 08:48 UTCEG score recompute
  23. 2026-06-13 23:00 UTCEPSS rescore
  24. 2026-06-13 21:09 UTCEG score recompute
  25. 2026-06-13 07:26 UTCEG score recompute
  26. 2026-06-12 23:12 UTCEPSS rescore
  27. 2026-06-12 23:12 UTCEPSS rescore
  28. 2026-06-12 19:46 UTCEG score recompute
  29. 2026-06-12 08:06 UTCEG score recompute
  30. 2026-06-11 20:25 UTCEG score recompute
  31. 2026-06-11 14:00 UTCEPSS rescore
  32. 2026-06-11 08:45 UTCEG score recompute
  33. 2026-06-10 22:18 UTCEPSS rescore
  34. 2026-06-10 21:06 UTCEG score recompute
  35. 2026-06-10 13:22 UTCEPSS rescore
  36. 2026-06-10 13:22 UTCEPSS rescore
  37. 2026-06-10 09:26 UTCEG score recompute
  38. 2026-06-09 21:47 UTCEG score recompute
  39. 2026-06-09 10:06 UTCEG score recompute▲ 1.60
  40. 2026-06-08 23:31 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  41. 2026-06-08 14:17 UTCEPSS rescore
  42. 2026-06-08 14:17 UTCEPSS rescore
  43. 2026-06-08 09:06 UTCEG score recompute
  44. 2026-06-07 15:25 UTCEPSS rescore
  45. 2026-06-07 15:25 UTCEPSS rescore
  46. 2026-06-07 08:05 UTCEG score recompute
  47. 2026-06-06 13:47 UTCEPSS rescore
  48. 2026-06-06 13:47 UTCEPSS rescore
  49. 2026-06-06 07:04 UTCEG score recompute
  50. 2026-06-05 22:47 UTCEPSS rescore
  51. 2026-06-05 06:10 UTCEPSS rescore
  52. 2026-06-05 06:10 UTCEPSS rescore
  53. 2026-06-05 06:04 UTCEG score recompute
  54. 2026-06-04 13:12 UTCEPSS rescore
  55. 2026-06-04 13:12 UTCEPSS rescore
  56. 2026-06-04 05:03 UTCEG score recompute
  57. 2026-06-03 04:02 UTCEG score recompute
  58. 2026-06-02 20:13 UTCEPSS rescore
  59. 2026-06-02 03:01 UTCEG score recompute
  60. 2026-06-01 13:52 UTCEPSS rescore
  61. 2026-06-01 13:52 UTCEPSS rescore
  62. 2026-06-01 02:00 UTCEG score recompute
  63. 2026-05-31 22:30 UTCEPSS rescore
  64. 2026-05-31 22:30 UTCEPSS rescore
  65. 2026-05-29 13:44 UTCEPSS rescore
  66. 2026-05-29 13:44 UTCEPSS rescore
  67. 2026-05-28 13:44 UTCEPSS rescore
  68. 2026-05-28 13:44 UTCEPSS rescore
  69. 2026-05-27 13:40 UTCEPSS rescore
  70. 2026-05-27 13:40 UTCEPSS rescore
  71. 2026-05-26 20:29 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-44837?
CVE-2026-44837 is a high vulnerability published on May 26, 2026. view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 3.0.0 to 4.9.0, the system test entrypoint canonicalizes a user-controlled file path with File.realpath, then checks whether the resolved path starts with the temp directory path.…
When was CVE-2026-44837 disclosed?
CVE-2026-44837 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44837 actively exploited?
CVE-2026-44837 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44837?
CVE-2026-44837 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-44837?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44837, 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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