CVE-2026-1584

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-04-09. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and resulting in a remote Denial of Service (DoS) condition.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
70%
KEV
Not listed

Published

April 9, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated May 3, 2026
Patch available. Sources: redhat.
redhat Patch Available

2435258 – (CVE-2026-1584) CVE-2026-1584 gnutls: gnutls: Remote Denial of Service via crafted ClientHello with invalid PSK binder

https://bugzilla.redhat.com/show_bug.cgi?id=2435258
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-1584
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:7477

Vendor Advisories for CVE-2026-1584(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgnutls-main-3.8.12-1.1.hum12026-04-10redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 6 ecosystems)
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
gnutls—3.8.12-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
gnutls—3.8.12-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
gnutls—3.8.12-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
gnutls—3.8.12-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
gnutls—3.8.12-r0—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gnutls283.8.10-1 ... 3.8.9-3 (7 versions)3.8.12-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 50× 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 245 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-1584?
CVE-2026-1584 is a high vulnerability published on April 9, 2026. A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and…
When was CVE-2026-1584 disclosed?
CVE-2026-1584 was first published in the National Vulnerability Database on April 9, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-1584 actively exploited?
CVE-2026-1584 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 30.4% of all scored CVEs.
What is the CVSS score of CVE-2026-1584?
CVE-2026-1584 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-1584?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-1584, 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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