CVE-2026-58472 PUBLISHED

GNU Wget 1.25.0 Heap Buffer Overflow via HTML Attribute Encoding

Assigner: VulnCheck
Reserved: 30.06.2026 Published: 07.07.2026 Updated: 08.07.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
CVSS Score: 6

Product Status

Vendor gnuwget
Product wget
Versions Default: affected
  • affected from 0 to 1.25.0 (incl.)
  • Version dd692d9cea5335b181d877ae917fe6e75587a812 is unaffected

Credits

  • Tristan Madani finder

References

Problem Types

  • Integer Overflow or Wraparound CWE