CVE-2026-58472
6
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| gnuwget | wget | 0 <= 1.25.0 | affected |
| gnuwget | wget | dd692d9cea5335b181d877ae917fe6e75587a812 | unaffected |
Weaknesses
- CWE-190: Integer Overflow or Wraparound
References
- https://gitlab.com/gnuwget/wget/-/commit/dd692d9cea5335b181d877ae917fe6e75587a812
- https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-html-attribute-encoding
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