CVE-2026-78661 - Avoid quadratic complexity when coalescing text nodes in html in golang.org/x/net

CVE-2026-78661 - Avoid quadratic complexity when coalescing text nodes in html in golang.org/x/net

https://cvefeed.io/rssfeed/latest.atom / Wed, 10/28/2026 - 01:12
CVE ID :CVE-2026-78661
Published : Oct. 27, 2026, 9:38 p.m. | 44 minutes ago
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") 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.
Severity: 0.0 | NA
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