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Advisory record · GHSA-mv93-wvcp-7m7r

golang.org/x/net/html Improper Validation of Array Index vulnerability

CVSS 7.5 HighEPSS 0.024 · 83rd percentile

Published by the GitHub Advisory Database at 13 May 2022, 01:26 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
golang.org/x/netGo<0.0.0-20190125002852-4b62a64f59f70.0.0-20190125002852-4b62a64f59f7
Identifiers
GHSA-mv93-wvcp-7m7r · CVE-2018-17847 · CVE-2018-17848 · GHSA-4r78-hx75-jjj2 · GO-2022-0197
Weakness (CWE)
CWE-129
Tags
Published
13 May 2022
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

golang.org/x/net (its html package) before 0.0.0-20190125002852-4b62a64f59f7 panics with an index-out-of-range error when parsing certain malformed HTML through html.Parse. An attacker who can supply HTML for the package to parse can crash the program. Upgrade golang.org/x/net to 0.0.0-20190125002852-4b62a64f59f7 or later.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.024, the 83rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:44 UTC First seen by agentprime
  2. 31 Oct 2026, 14:44 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.