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MEDIUM

CVE-2025-47911

CVSS v3

5.3

MEDIUM

EPSS Score

0.6 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • golang.org/x/netGoall versions · fixed in 0.45.0and 1 other package

Vendor advisories

  • CVE-2025-47911 Red Hat Product Security182 products fixed · 580 known affected

    golang.org/x/net/html: Quadratic parsing complexity in golang.org/x/net/html

    rhai/assisted-installer-agent-rhel9 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2 · rhai/assisted-installer-controller-rhel9 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2 · rhai/assisted-installer-rhel9 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2

  • RHSA-2026:82354 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2

  • RHSA-2026:82322 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2

  • RHSA-2026:82304 Red Hat Product Security8 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2

  • RHSA-2026:43692 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Red Hat OpenShift API for Data Protection

  • RHSA-2026:37387 Red Hat Product Security108 products fixed

    Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.22.0 security, enhancement & bug fix update

3 more advisories

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published
2026-02-05
Last Modified
2026-02-18

Frequently asked questions

What is CVE-2025-47911?

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.

Is CVE-2025-47911 actively exploited?

Active exploitation of CVE-2025-47911 has not been confirmed. Its EPSS score was 0.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-47911?

CVE-2025-47911 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

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Same product first, then the same vendor advisory and the same publication week.

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