Em resumo
- CVE-2026-78661 é uma vulnerabilidade ainda sem pontuação que afeta golang.org/x/net.
- Chance de exploração nos próximos 30 dias (EPSS): 0.18%, maior que 8.1% das vulnerabilidades.
- Correção: atualize para 0.62.0 ou posterior.
Description
When coalescing adjacent text nodes in addText and fosterParent, appending to an existing TextNode's Data via string concatenation (n.Data += text) reallocated and copied the accumulated string on every token. Inputs containing many short text runs separated by ignored end tags (such as "a</x>") caused O(n^2) allocations and byte copies.
Accumulate coalesced text in per-node byte slices during parsing and materialize Data strings once at the end of parse.
NVD description
When coalescing adjacent text nodes in addText and fosterParent, appending to an existing TextNode's Data via string concatenation (n.Data += text) reallocated and copied the accumulated string on every token. Inputs containing many short text runs separated by ignored end tags (such as "a</x>") caused O(n^2) allocations and byte copies. Accumulate coalesced text in per-node byte slices during parsing and materialize Data strings once at the end of parse.
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