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CVE-2026-78323— Jss: jss: jsstrustmanager does not verify nss trust flags on ca certificates

Quick assessment

Affected
Red Hat Red Hat Certificate System 10
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.

JSS是JSS组织的一个 CSS 创作工具。 JSS存在加密问题漏洞，该漏洞源于JSSTrustManager类在验证CA证书时未验证NSS信任标志，在禁用证书吊销检查的非默认配置下，可能导致中间人攻击者伪造PKI客户端连接接受的证书。

CVSS 6.5 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1557.002 · ARP Cache Poisoning

Affected Version Matrix 7

VendorProduct Version RangeStatus
Red Hat Red Hat Certificate System 10 any affected
Red Hat Red Hat Certificate System 11 any affected
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-78323

Vulnerability Information
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Vulnerability Title
Jss: jss: jsstrustmanager does not verify nss trust flags on ca certificates
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in JSS (Java Security Services). The JSSTrustManager class does not verify NSS trust flags when validating CA certificates, allowing certificates present in the NSS database without TRUSTED_CA flags to be accepted as trust anchors for TLS connections. In non-default configurations where certificate revocation checking is disabled, this could allow a man-in-the-middle attacker to forge certificates accepted by PKI client connections.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
JSS 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JSS是JSS组织的一个 CSS 创作工具。 JSS存在加密问题漏洞，该漏洞源于JSSTrustManager类在验证CA证书时未验证NSS信任标志，在禁用证书吊销检查的非默认配置下，可能导致中间人攻击者伪造PKI客户端连接接受的证书。
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
Red Hat Red Hat Certificate System 10 - cpe:/a:redhat:certificate_system:10
Red Hat Red Hat Certificate System 11 - cpe:/a:redhat:certificate_system:11
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-78323

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III. Intelligence Information for CVE-2026-78323

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Vendor Advisories for CVE-2026-78323 (2)

Same Patch Batch · Red Hat · 2026-08-24 · 5 CVEs total

CVE-2026-71366 7.7 HIGH Awx: notification backends allow ssrf and credential leakage
CVE-2026-71364 7.2 HIGH Awx: project archive extraction allows path traversal file writes
CVE-2026-19685 7.1 HIGH Networkmanager: networkmanager: 802-1x ca-path and phase2-ca-path bypass private_user rest
CVE-2026-78367 7.0 HIGH Rpm: rpmbuild gettarspec() crafted tar member name → macro injection

IV. Related Vulnerabilities

Same product: Red Hat Certificate System 10
Same vendor: Red Hat
Same weakness: CWE-295

V. Comments for CVE-2026-78323

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