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GO-2026-6860

Published Oct 27, 2026·Last modified Oct 27, 2026
Affected Components(1)
Go logogolang.org/x/net
< 0.62.0
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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Risk Scores
Base Score
-1.0

Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.

Threat Intelligence
-1.0

No exploitation activity has been observed at this time. Continue routine monitoring.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • CVE-2026-78661
    Alias
  • EUVD-2026-111399
    Alias
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