CVE-2026-25679 | Incorrect parsing of IPv6 host literals in net/url

url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.

Published: 2026-03-06 Last update: 2026-04-21 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-25679 is rated Low Risk (34.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.04%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-25679

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-13 0.05% 0.04% -0.01%
2 2026-04-21 0.03% 0.05% +0.02%
3 2026-03-21 — 0.03% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-25679

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-25679

GitHub Security Advisory for CVE-2026-25679

GHSA-j3gx-2473-5fp8 · Severity: high — url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.

OS Trackers for CVE-2026-25679

vendor priority summary link
alpine — CVE-2026-25679: 1 source package rows (go); 95 state rows across 2 repos (3.23-community, edge-community); fixed 3, open 92. https://security.alpinelinux.org/vuln/CVE-2026-25679
debian unimportant CVE-2026-25679 unimportant priority: Debian including 5 source packages (golang-1.15, golang-1.19, golang-1.24, golang-1.25, golang-1.26), 7 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7. https://security-tracker.debian.org/tracker/CVE-2026-25679
redhat high — https://access.redhat.com/security/cve/CVE-2026-25679
suse medium — https://www.suse.com/security/cve/CVE-2026-25679/
ubuntu medium CVE-2026-25679 medium priority: Ubuntu including 3 source packages (golang-1.24, golang-1.25, golang-1.26), 12 status rows across 4 suites (jammy, noble, questing, upstream): DNE 5, needs-triage 5, released 2. https://ubuntu.com/security/CVE-2026-25679

Affected software / configurations for CVE-2026-25679

Vendor Product Version Raw CPE
golang go < 1.25.8 cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
golang go 1.26.0 cpe:2.3:a:golang:go:1.26.0:*:*:*:*:*:*:*

References for CVE-2026-25679

cvelogic Threat Intelligence