CVE-2025-47911: medium-severity vulnerability in golang.org/x/net/html
Quadratic parsing complexity in golang.org/x/net/html
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.6%
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
golang.org/x/net · golang.org/x/net/htmlRelated CVEs — golang.org/x/net/html
In the same product, most dangerous first.
CVE-2024-45338MEDIUMNon-linear parsing of case-insensitive content in golang.org/x/net/htmlEPSS 1.1%CVE-2023-3978—Improper rendering of text nodes in golang.org/x/net/htmlEPSS 0.9%CVE-2025-22872MEDIUMIncorrect Neutralization of Input During Web Page Generation in x/net in golang.org/x/netEPSS 0.5%CVE-2025-58190MEDIUMInfinite parsing loop in golang.org/x/netEPSS 0.5%CVE-2026-78661HIGHAvoid quadratic complexity when coalescing text nodes in html in golang.org/x/netEPSS 0.4%CVE-2026-25680MEDIUMInvoking denial of service when parsing arbitrary HTML in golang.org/x/net/htmlEPSS 0.3%