CVE-2026-19589

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-17. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in Packer 1.16.0.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 17, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

HCSEC-2026-29 - Packer vulnerable to arbitrary file write via crafted plugin archive during installation - Security - HashiCorp Discuss

https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654

Vendor Advisories for CVE-2026-19589(2)

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.

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 40× in last 7d / 129× 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 143 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-19589?
CVE-2026-19589 is a high vulnerability published on August 17, 2026. Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in…
When was CVE-2026-19589 disclosed?
CVE-2026-19589 was first published in the National Vulnerability Database on August 17, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19589 actively exploited?
CVE-2026-19589 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.9% of all scored CVEs.
What is the CVSS score of CVE-2026-19589?
CVE-2026-19589 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-19589?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19589, 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.

Dependency Blast Radius

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