CVE-2026-58470: GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_cont

Q: How do I fix CVE-2026-58470?

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

Q: Is CVE-2026-58470 being exploited?

CVE-2026-58470 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-2026-58470 affect?

CVE-2026-58470 affects wget. Severity is medium (CVSS 5.3). GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_content_range() function within src/http.c that allows server-controlled values to cause signed integer arithmetic to overflow. Attack

Q: How urgent is CVE-2026-58470?

Priority 28/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-58470 is a medium-severity flaw (CVSS 5.3) 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 43d3ba9, contains an integer overflow vulnerability in the parse_content_range() function within src/http.c that allows server-controlled values to cause signed integer arithmetic to overflow. Attackers can supply malicious Content-Range header values to trigger undefined behavior and download desynchronization in the affected client.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-190
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-2026-58470?

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

Is CVE-2026-58470 being exploited?

CVE-2026-58470 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-2026-58470 affect?

CVE-2026-58470 affects wget. Severity is medium (CVSS 5.3). GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_content_range() function within src/http.c that allows server-controlled values to cause signed integer arithmetic to overflow. Attack

How urgent is CVE-2026-58470?

Priority 28/100. Remotely exploitable, no login, no user action

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-2026-58471 MEDIUM 5.9 UPGRADE GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert
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

References

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