CVE-2026-1858

MEDIUMNVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2026-04-29. NVD baseline CVSS 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.8Exploit: None knownExposed: 0

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

wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

April 29, 2026

Last Modified

May 5, 2026

References (1)

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
wget21.99.1-2.2 ... 2.2.0+ds-3 (14 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
wget21.99.1-2.2 ... 2.2.0+ds-3 (14 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
wget22.2.0+ds-1, 2.2.0+ds-1+deb13u1, 2.2.0+ds-2, 2.2.0+ds-3——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
wget22.2.0+ds-1, 2.2.0+ds-2, 2.2.0+ds-3——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 26× 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 191 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-1858?
CVE-2026-1858 is a medium vulnerability published on April 29, 2026. wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.
When was CVE-2026-1858 disclosed?
CVE-2026-1858 was first published in the National Vulnerability Database on April 29, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-1858 actively exploited?
CVE-2026-1858 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 95.0% of all scored CVEs.
What is the CVSS score of CVE-2026-1858?
CVE-2026-1858 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-1858?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-1858, 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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