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CVE-2026-12704— SAML assertion replay via skipped InResponseTo validation

Quick assessment

Affected

Grafana Grafana Enterprise

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grafana Enterprise是Grafana公司的一个数据可视化与监控分析平台。 Grafana Enterprise 11.6.0版本至11.6.17版本、12.2.0版本至12.2.11版本、12.3.0版本至12.3.11版本、12.4.0版本至12.4.10版本、13.0.0版本至13.0.7版本、13.1.0版本至13.1.4版本和13.2.0版本存在授权问题漏洞，该漏洞源于启用了SAML IdP-initiated login时，SAML库跳过了所有SAML响应中InResponseT

CVSS 6.8 · Medium EPSS 0.29% · P22 Updated Sep 03, 2026

Possible ATT&CK Techniques 2 AI

T1190 · Exploit Public-Facing Application T1056 · Input Capture

Affected Version Matrix 7

Vendor	Product	Version Range	Status
Grafana	Grafana Enterprise	`11.6.0≤ 11.6.17`	affected
		`12.2.0≤ 12.2.11`	affected
		`12.3.0≤ 12.3.11`	affected
		`12.4.0≤ 12.4.10`	affected
		`13.0.0≤ 13.0.7`	affected
		`13.1.0≤ 13.1.4`	affected
		`13.2.0≤ 13.2.0`	affected

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I. Basic Information for CVE-2026-12704

Vulnerability Information

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Vulnerability Title

SAML assertion replay via skipped InResponseTo validation

Source: CVE Program / CVE List V5

Vulnerability Description

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and gain a session as the victim user. Only instances with the allow_idp_initiated SAML setting enabled are affected; this setting is off by default and Grafana OSS is not affected.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

使用捕获-重放进行的认证绕过

Source: CVE Program / CVE List V5

Vulnerability Title

Grafana Enterprise 授权问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Grafana	Grafana Enterprise	11.6.0 ~ 11.6.17	-

II. Public POCs for CVE-2026-12704

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-12704

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Vendor Advisories for CVE-2026-12704 (1)

🔗 404 Page not found | Grafana Labs vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-12704

Same Patch Batch · Grafana · 2026-09-02 · 3 CVEs total

CVE-2026-14199	7.1 HIGH	Session takeover via Auth Proxy cache key collision
CVE-2026-19475	6.5 MEDIUM	SQL Data Source Plugin: OOM DoS via $__timeGroup macro

IV. Related Vulnerabilities

Same product: Grafana Enterprise

Same vendor: Grafana

Same weakness: CWE-294