CVE-2026-66756

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory published 2026-07-30. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.8Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Improper Protection of Alternate Path vulnerability in Apache Tika.

This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.

Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
53rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 30, 2026

Last Modified

August 10, 2026

Advisory Details (2)

Auto-updated Oct 5, 2026
Fix named in the CVE record.
generic

oss-security - CVE-2026-66756: Apache Tika: unpack endpoint in tika-server allows configuration with unsecureFeatures=false

http://www.openwall.com/lists/oss-security/2026/07/30/24
generic

Pony Mail

https://lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568

Vendor Advisories for CVE-2026-66756(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 19× in last 7d / 114× 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 327 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66756?
CVE-2026-66756 is a critical vulnerability published on July 30, 2026. Improper Protection of Alternate Path vulnerability in Apache Tika. This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1. Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.
When was CVE-2026-66756 disclosed?
CVE-2026-66756 was first published on July 30, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66756 actively exploited?
CVE-2026-66756 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-66756?
CVE-2026-66756 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-66756?
The CVE record for CVE-2026-66756 names the fix: "Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue." The vendor advisories EchelonGraph has for CVE-2026-66756 are linked in the Vendor Advisories panel on this page.

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