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CVE-2018-17142

26
FAUCET Score

CVE-2018-17142 describes a denial-of-service vulnerability in the Go html package (x/net/html) through 2018-09-17, affecting products like Fedora and Golang. This flaw, rated 7.5 HIGH, allows an unauthenticated attacker to trigger a runtime error and crash the application by providing specially crafted HTML input containing nested math and template tags. While the vulnerability has a high severity and is easily exploitable over the network, there is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2018-09-17CPE matchmatch criteria
cpe:2.3:a:golang:net:*:*:*:*:*:*:*:*
28CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.81%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0281 is in the 73rd percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa
Product: golang.org/x/netFixed in: 0.0.0-20180925071336-cf3bd585ca2a

Vendor Advisories (2)

goGHSA-2wp2-chmh-r934high

golang.org/x/net/html NULL Pointer Dereference vulnerability

May 13, 2022
redhatCVE-2018-17142Moderate

golang-org-x-net-html: Runtime panic in html.Parse() via crafted html

Sep 26, 2018

References

github.com / golang/go/issues/27702
ExploitThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/LREEWY6KNLHRWFZ7OT4HVLMVVCGGUHON
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UKRCI7WIOCOCD3H7NXWRGIRABTQOZOBK