CVE-2026-29963

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-18. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

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

HSC MailInspector 5.3.3-7 has a Path Traversal vulnerability due to improper validation of user-supplied input in the /tap/dw.php endpoint. The text parameter is used to construct file paths without adequate normalization or restriction to a safe base directory. A remote attacker can exploit this flaw to access arbitrary files on the underlying operating system, resulting in unauthorized disclosure of sensitive information.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
44.4%
KEV
Not listed

Published

May 18, 2026

Last Modified

May 19, 2026

Advisory Details (3)

Auto-updated Jun 9, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Solução de Segurança de E-mail - Mailinspector - HSC Labs

https://hsclabs.com/pt-br/mailinspector/
generic

cve-disclosures/02_-_CVE-2026-29963_LFI+Path_Traversal.md at main · sql3t0/cve-disclosures · GitHub

https://github.com/sql3t0/cve-disclosures/blob/main/02_-_CVE-2026-29963_LFI%2BPath_Traversal.md
generic🟡 PoC Available

GitHub - sql3t0/cve-disclosures: Collection of CVEs and security advisories discovered and responsibly disclosed by Sql3t0, including technical details, impact assessment, and mitigation guidance. · GitHub

https://github.com/sql3t0/cve-disclosures

Vendor Advisories for CVE-2026-29963(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 10× in last 7d / 67× 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 178 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-13 22:30 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-13 06:13 UTCEPSS rescore
  8. 2026-07-12 05:46 UTCEPSS rescore
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-09 19:10 UTCEPSS rescore
  11. 2026-07-08 15:15 UTCEPSS rescore
  12. 2026-07-07 13:46 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 16:27 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-06 02:23 UTCEPSS rescore
  17. 2026-07-05 02:30 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-29 21:08 UTCEG score recompute
  22. 2026-06-29 21:08 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-28 14:07 UTCEPSS rescore
Show 75 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 09:29 UTCEG score recompute
  3. 2026-06-28 09:29 UTCGHSA enrichment
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 21:20 UTCEG score recompute
  7. 2026-06-27 21:20 UTCGHSA enrichment
  8. 2026-06-27 08:06 UTCEG score recompute
  9. 2026-06-27 08:06 UTCGHSA enrichment
  10. 2026-06-27 03:08 UTCEPSS rescore
  11. 2026-06-26 19:54 UTCEG score recompute
  12. 2026-06-26 19:54 UTCGHSA enrichment
  13. 2026-06-26 05:42 UTCEG score recompute
  14. 2026-06-26 05:42 UTCGHSA enrichment
  15. 2026-06-25 17:32 UTCEG score recompute
  16. 2026-06-25 17:32 UTCGHSA enrichment
  17. 2026-06-25 13:49 UTCEPSS rescore
  18. 2026-06-25 13:49 UTCEPSS rescore
  19. 2026-06-24 14:05 UTCEPSS rescore
  20. 2026-06-24 14:05 UTCEPSS rescore
  21. 2026-06-23 21:33 UTCEPSS rescore
  22. 2026-06-23 21:32 UTCEPSS rescore
  23. 2026-06-22 14:25 UTCEPSS rescore
  24. 2026-06-22 14:25 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
  26. 2026-06-21 14:56 UTCEPSS rescore
  27. 2026-06-21 01:59 UTCEPSS rescore
  28. 2026-06-21 01:59 UTCEPSS rescore
  29. 2026-06-19 19:25 UTCEPSS rescore
  30. 2026-06-19 19:25 UTCEPSS rescore
  31. 2026-06-18 17:52 UTCEPSS rescore
  32. 2026-06-18 02:20 UTCEG score recompute
  33. 2026-06-18 02:20 UTCGHSA enrichment
  34. 2026-06-17 17:53 UTCEPSS rescore
  35. 2026-06-17 17:53 UTCEPSS rescore
  36. 2026-06-17 13:14 UTCEG score recompute
  37. 2026-06-17 13:14 UTCGHSA enrichment
  38. 2026-06-16 23:33 UTCEG score recompute
  39. 2026-06-16 23:33 UTCGHSA enrichment
  40. 2026-06-16 17:52 UTCEPSS rescore
  41. 2026-06-16 11:23 UTCEG score recompute
  42. 2026-06-16 11:22 UTCGHSA enrichment
  43. 2026-06-15 23:09 UTCEG score recompute
  44. 2026-06-15 23:09 UTCGHSA enrichment
  45. 2026-06-15 17:48 UTCEPSS rescore
  46. 2026-06-14 23:18 UTCEPSS rescore
  47. 2026-06-14 23:11 UTCEG score recompute
  48. 2026-06-14 23:11 UTCGHSA enrichment
  49. 2026-06-14 11:01 UTCEG score recompute
  50. 2026-06-14 11:00 UTCGHSA enrichment
  51. 2026-06-13 23:00 UTCEPSS rescore
  52. 2026-06-13 22:51 UTCEG score recompute
  53. 2026-06-13 22:51 UTCGHSA enrichment
  54. 2026-06-13 09:21 UTCEG score recompute
  55. 2026-06-13 09:21 UTCGHSA enrichment
  56. 2026-06-12 23:12 UTCEPSS rescore
  57. 2026-06-12 23:12 UTCEPSS rescore
  58. 2026-06-12 21:10 UTCEG score recompute
  59. 2026-06-12 21:10 UTCGHSA enrichment
  60. 2026-06-12 09:01 UTCEG score recompute
  61. 2026-06-12 09:00 UTCGHSA enrichment
  62. 2026-06-11 20:48 UTCEG score recompute
  63. 2026-06-11 20:48 UTCGHSA enrichment
  64. 2026-06-11 14:00 UTCEPSS rescore
  65. 2026-06-11 08:38 UTCEG score recompute
  66. 2026-06-11 08:38 UTCGHSA enrichment
  67. 2026-06-10 22:18 UTCEPSS rescore
  68. 2026-06-10 22:18 UTCEPSS rescore
  69. 2026-06-10 20:28 UTCEG score recompute
  70. 2026-06-10 20:28 UTCGHSA enrichment
  71. 2026-06-10 13:22 UTCEPSS rescore
  72. 2026-06-10 08:19 UTCEG score recompute
  73. 2026-06-10 08:19 UTCGHSA enrichment
  74. 2026-06-09 20:08 UTCEG score recompute
  75. 2026-06-09 20:08 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-29963?
CVE-2026-29963 is a high vulnerability published on May 18, 2026. HSC MailInspector 5.3.3-7 has a Path Traversal vulnerability due to improper validation of user-supplied input in the /tap/dw.php endpoint. The text parameter is used to construct file paths without adequate normalization or restriction to a safe base directory. A remote attacker can exploit this…
When was CVE-2026-29963 disclosed?
CVE-2026-29963 was first published in the National Vulnerability Database on May 18, 2026, with the most recent update on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29963 actively exploited?
CVE-2026-29963 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 44.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-29963?
CVE-2026-29963 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-29963?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29963, 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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