CVE-2026-58471

HIGHNVD 7.15.9▼
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-07-07. NVD baseline CVSS 7.1; sources differ by 1.2.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 5 sources updated this week
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

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

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
7.1
EG Score
5.9(medium)
EPSS
12.6%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 9, 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(1)

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 26× 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.

  1. 2026-07-14 03:50 UTCEG score recompute
  2. 2026-07-14 03:50 UTCGHSA enrichment
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-13 06:13 UTCEG score recompute
  6. 2026-07-13 06:13 UTCGHSA enrichment
  7. 2026-07-12 08:34 UTCEG score recompute
  8. 2026-07-12 08:34 UTCGHSA enrichment
  9. 2026-07-12 05:46 UTCEPSS rescore
  10. 2026-07-11 10:56 UTCEG score recompute
  11. 2026-07-11 10:56 UTCGHSA enrichment
  12. 2026-07-11 08:27 UTCEPSS rescore
  13. 2026-07-11 08:27 UTCEPSS rescore
  14. 2026-07-10 13:19 UTCEG score recompute
  15. 2026-07-10 13:18 UTCGHSA enrichment
  16. 2026-07-09 19:10 UTCEPSS rescore
  17. 2026-07-09 19:10 UTCEPSS rescore
  18. 2026-07-09 17:00 UTCNVD updateCVSS v3 → 7.1 · severity → HIGH
  19. 2026-07-09 15:40 UTCEG score recompute
  20. 2026-07-09 15:40 UTCGHSA enrichment
  21. 2026-07-08 18:02 UTCEG score recompute
  22. 2026-07-08 18:02 UTCGHSA enrichment
  23. 2026-07-08 15:16 UTCEPSS rescore
  24. 2026-07-08 15:16 UTCEPSS rescore
  25. 2026-07-07 20:22 UTCEG score recompute
Show 1 more
  1. 2026-07-07 20:21 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-58471?
CVE-2026-58471 is a high 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 9, 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 12.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-58471?
CVE-2026-58471 has a CVSS v3 base score of 7.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.9.
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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