What’s Vulnerable › Vulnerabilities

CVE-2026-97030: Recognize yield as regexp preceder keyword in html/template

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-08 · updated 2026-10-15
• Weakness: CWE-79

Description

A trusted template author may have previously written a valid template wherein the use of the 'yield' keyword would not be correctly escaped. We now ensure that valid keyword uses are escaped and non-keyword uses are not escaped.

Affected products

• Go Stdlib: before 1.26.9; from 1.27.0-0 before 1.27.2 — fixed in 1.26.9, 1.27.2
• Go standard library html/template: before 1.26.9; from 1.27.0-0 before 1.27.2 — fixed in 1.26.9, 1.27.2

How to fix

Upgrade to a fixed version: Go Stdlib 1.26.9, 1.27.2; Go standard library html/template 1.26.9, 1.27.2. Check the vendor advisory for mitigations.

References

• https://go.dev/cl/840925
• https://go.dev/issue/81823
• https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
• https://pkg.go.dev/vuln/GO-2026-6600

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