CVE-2026-58471: GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert

Q: How do I fix CVE-2026-58471?

wget: upgrade to newer than 1.25.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-58471 being exploited?

CVE-2026-58471 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-58471 affect?

CVE-2026-58471 affects wget. Severity is medium (CVSS 5.9). 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 re

Q: How urgent is CVE-2026-58471?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 5.9UPGRADE

CVE-2026-58471 is a medium-severity flaw (CVSS 5.9) affecting wget. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 exp

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-122
Published	2026-07-07
Last modified	2026-10-25

Publisher (CNA): VulnCheck · Vendor: gnu

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-07 21:17 UTCPublished CVE record published
2026-10-25 20:10 UTCUpdated Record last modified

gnu wget UPGRADE

Affected: <= 1.25.0

Fixed in: newer than 1.25.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wget || rpm -q wget || wget --version

2. UPGRADE to newer than 1.25.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wget

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wget

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-58471?

wget: upgrade to newer than 1.25.0. Exact commands for each OS are on this page.

Is CVE-2026-58471 being exploited?

CVE-2026-58471 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-58471 affect?

CVE-2026-58471 affects wget. Severity is medium (CVSS 5.9). 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 re

How urgent is CVE-2026-58471?

Priority 29/100. No elevated risk signals yet.

Related CVEs

CVE-2026-58469 HIGH 7.5 UPGRADE GNU Wget through 1.25.0, fixed in commit 37a40fc, contains a heap buffer underread vulnerability in the clean_
CVE-2026-58472 MEDIUM 5.9 UPGRADE GNU Wget through 1.25.0, fixed in commit dd692d9, contains a heap buffer overflow vulnerability in the html_qu
CVE-2026-58470 MEDIUM 5.3 UPGRADE GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_cont

References

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