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 mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: None knownExposed services: Not assessed

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

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
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100CISA 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (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

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(3)

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 31× in last 7d / 140× 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 212 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 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 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19589?
CVE-2026-19589 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19589?
No fix for CVE-2026-19589 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-19589 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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