Unchecked Input for Loop Condition Affecting wget package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.38% (31st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-WGET-19276216
  • published27 Aug 2026
  • disclosed25 Aug 2026

Introduced: 25 Aug 2026

NewCVE-2026-16599  (opens in a new tab)
CWE-606  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable wget.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wget package and not the wget package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

GNU wget is vulnerable to denial of service in its FTP OPIE/S-KEY authentication functionality. The server-supplied sequence number from the FTP challenge line is used as an iteration count for an MD5 key-derivation loop without any upper bound validation. A malicious FTP server or a network attacker positioned to intercept FTP traffic can send a crafted OPIE challenge with a sequence number near INT_MAX, causing wget to perform up to approximately 2.1 billion MD5 computations and suspend for some time. The --timeout option does not mitigate this because it applies only to network I/O, not CPU computation.

This issue was fixed in commit e9697d98e7249b0f68a6be040a4f3dcc5bc101fa

CVSS Base Scores

version 3.1