CVE-2026-58472
GNU Wget through 1.25.0, fixed in commit dd692d9, contains a heap buffer overflow vulnerability in the html_quote_string() function in src/convert.c that allows a remote attacker to trigger memory corruption by supplying a crafted HTML attribute with a large number of characters requiring entity encoding. A server-supplied HTML attribute causes a signed integer counter to overflow during output size accumulation, resulting in an undersized heap allocation and subsequent heap buffer overflow during the copy phase.
- Published Jul 7, 2026
- CVSS 6.0 medium
- 0.4% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
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