CVE-2026-39826

MEDIUMNVD 6.16.1—

6.1

If a trusted template author were to write a tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the block.

CVSS v3: 6.1
EG Score: 6.1(high)
EPSS: 2.0%
KEV: Not listed

Published

May 7, 2026

Last Modified

May 13, 2026

References (4)

security@golanghttps://go.dev/cl/771180
security@golanghttps://go.dev/issue/78981
security@golanghttps://groups.google.com/g/golang-announce/c/qcCIEXso47M
security@golanghttps://pkg.go.dev/vuln/GO-2026-4980

Vendor Advisories for CVE-2026-39826(1)

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

CVE-2026-39826
Microsoft Security Response Center (MSRC)
Escaper bypass leads to XSS in html/template

Frequently asked(5)

What is CVE-2026-39826?

CVE-2026-39826 is a medium vulnerability published on May 7, 2026. If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.

When was CVE-2026-39826 disclosed?

CVE-2026-39826 was first published in the National Vulnerability Database on May 7, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-39826 actively exploited?

CVE-2026-39826 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-39826?

CVE-2026-39826 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2026-39826?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39826, 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

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CVE-2026-39826

📅 Published

🔄 Last Modified

🔗 References (4)

📣 Vendor Advisories for CVE-2026-39826(1)

❓ Frequently asked(5)