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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.

在 JSS（Java Security Services）中发现了一个漏洞。JSSTrustManager 类在验证 CA 证书时未检查 NSS 信任标志，导致 NSS 数据库中未标记 TRUSTED_CA 标志的证书可被接受为 TLS 连接的信任锚。在禁用证书吊销检查的非默认配置下，这可能使中间人攻击者伪造被 PKI 客户端连接所接受的证书。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1557.002 · ARP Cache Poisoning
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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

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 · 6 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
CVE-2026-17113 6.0 MEDIUM Cri-o: cri-o: unvalidated image env var causes daemon crash

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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