CVE-2026-58471

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-07-07. the CNA's CVSS baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

A fix is available — apply it.

GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is too small during iconv E2BIG reallocation, the reallocation logic miscalculates the remaining space, leading to a heap buffer overflow that can be exploited via a maliciously crafted server response.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

GNU Wget 1.25.0 Heap Buffer Overflow via convert_fname() in url.c | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-convert-fname-in-url-c
generic

Fix buffer size handling in filename conversion (c2640fe5) · Commits · Wget / wget · GitLab

https://gitlab.com/gnuwget/wget/-/commit/c2640fe5171c59f87c58dc9fcb195b2d18b010ee

Vendor Advisories for CVE-2026-58471(2)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwget (1.21.2-2ubuntu1.3) @ jammy2026-09-05ubuntu
redhatwget-0:1.24.5-8.el10_22026-09-01redhat
redhatwget-0:1.19.5-16.el8_102026-09-01redhat
redhatwget-0:1.21.1-11.el9_82026-09-01redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
wget1.21-1 ... 1.25.0-3 (12 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
wget1.21.3-1 ... 1.25.0-3 (8 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
wget1.25.0-2, 1.25.0-3——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
wget1.25.0-2, 1.25.0-3——

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 76× 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 198 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-58471?
CVE-2026-58471 is a medium vulnerability published on July 7, 2026. GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is…
When was CVE-2026-58471 disclosed?
CVE-2026-58471 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58471 actively exploited?
CVE-2026-58471 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 87.4% of all scored CVEs.
What is the CVSS score of CVE-2026-58471?
CVE-2026-58471 has a CVSS v4.0 base score of 5.9 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-58471?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58471, 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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