CVE-2025-47911

MEDIUMNVD 5.35.3—Trending — 3 sources updated this week

5.3

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 v3: 5.3
EG Score: 5.3(medium)
EPSS: 2.7%
KEV: Not listed

Published

February 5, 2026

Last Modified

February 18, 2026

References (4)

security@golanghttps://github.com/golang/vulndb/issues/4440
security@golanghttps://go.dev/cl/709876
security@golanghttps://groups.google.com/g/golang-announce/c/jnQcOYpiR2c
security@golanghttps://pkg.go.dev/vuln/GO-2026-4440

Vendor Advisories for CVE-2025-47911(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(5)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	golang-golang-x-net-dev (1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2) @ xenial	2026-05-29	ubuntu
ubuntu	golang-golang-x-net-dev (1:0.21.0+dfsg-1ubuntu0.1~esm2) @ noble	2026-05-29	ubuntu
ubuntu	lxd-tools (3.0.3-0ubuntu1~18.04.2+esm2) @ bionic	2026-05-29	ubuntu
redhat	golang1-25-main-1.25.9-1.hum1	2026-04-10	redhat
redhat	golang1-26-main-1.26.2-1.hum1	2026-04-09	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 14:32 UTCEG score recompute
2026-05-29 14:32 UTCVendor advisory
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-47911?

CVE-2025-47911 is a medium vulnerability published on February 5, 2026. 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.

When was CVE-2025-47911 disclosed?

CVE-2025-47911 was first published in the National Vulnerability Database on February 5, 2026, with the most recent update on February 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-47911 actively exploited?

CVE-2025-47911 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

CVE-2025-47911 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2025-47911?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-47911, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-47911

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CVE-2025-47911

📅 Published

🔄 Last Modified

🔗 References (4)

📣 Vendor Advisories for CVE-2025-47911(2)