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    CVE-2026-27136

    Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

    Published:May 22, 2026
    Last Modified:May 29, 2026
    EPS:May 22, 2026
    EPSS Score:0.00033
    CVSS Score:6.1

    Affected Products

    Vendor
    Golang
    Product
    Net

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-42507 (CVSS 5.3) — When returning errors, functions in the net/textproto package would include its input as part of the error. Th…
    CVE-2026-25681 (CVSS 6.1) — Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be …
    CVE-2026-25680 (CVSS 6.5) — Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.…
    CVE-2026-42502 (CVSS 6.1) — Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be …
    CVE-2026-39821 (CVSS 9.6) — The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only la…
    CVE-2026-42506 (CVSS 6.1) — Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be …
    CVE-2025-47911 (CVSS 5.3) — The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inpu…
    CVE-2025-58190 (CVSS 5.3) — The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, …
    CVE-2025-61724 (CVSS 5.3) — The Reader.ReadResponse function constructs a response string through repeated string concatenation of lines. …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High