CVE-2026-16254— Claircore: claircore: denial of service via out-of-bounds slice in claircore's apk installed-database parser
Quick assessment
Affected
Red Hat Red Hat Advanced Cluster Security 4
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.
QUAY Claircore是QUAY团队的一款漏洞扫描引擎。 QUAY Claircore存在缓冲区错误漏洞，该漏洞源于claircore的apk包扫描器中畸形的包数据库数据导致越界访问，如果扫描器崩溃未被恢复，Clair索引器进程可能崩溃，导致拒绝服务。
Possible ATT&CK Techniques 2 AI
T1499 · Endpoint Denial of Service T1499.002 · Service Exhaustion FloodAffected Version Matrix 11
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Advanced Cluster Security 4 | any |
affected |
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
| … +1 more rows | |||
| Red Hat | Red Hat Quay 3 | any |
affected |
any |
affected | ||
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I. Basic Information for CVE-2026-16254
Vulnerability Information
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Vulnerability Title
Claircore: claircore: denial of service via out-of-bounds slice in claircore's apk installed-database parser
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in claircore's apk package scanner. Malformed package-database data in a container layer can cause an out-of-bounds access that panics the scanner. If that panic is not recovered, the Clair indexer process can crash, leading to a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
QUAY Claircore 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QUAY Claircore是QUAY团队的一款漏洞扫描引擎。 QUAY Claircore存在缓冲区错误漏洞，该漏洞源于claircore的apk包扫描器中畸形的包数据库数据导致越界访问，如果扫描器崩溃未被恢复，Clair索引器进程可能崩溃，导致拒绝服务。
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 Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
|
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
|
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
|
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| Red Hat | Red Hat Advanced Cluster Security 4 | - |
cpe:/a:redhat:advanced_cluster_security:4
|
|
| Red Hat | Red Hat Quay 3 | - |
cpe:/a:redhat:quay:3
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| Red Hat | Red Hat Quay 3 | - |
cpe:/a:redhat:quay:3
|
|
II. Public POCs for CVE-2026-16254
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-16254 (2)
Same Patch Batch · Red Hat · 2026-07-20 · 8 CVEs total
| CVE-2026-16242 | 9.4 CRITICAL | Hypershift: konnectivity proxy-server accepts agent connections without validating client |
| CVE-2026-12701 | 9.0 CRITICAL | Pulpcore: pulpcore: relative_path_validator bypass via directory traversal in filesystemex |
| CVE-2026-64612 | 7.5 HIGH | Libcupsfilters: cups-filters: libcupsfilters: cups image filter process abort via malforme |
| CVE-2026-12080 | 7.3 HIGH | Qemu-kvm: qemu-guest-agent: local privilege escalation via symlink attack in guest-ssh-add |
| CVE-2026-15813 | 6.5 MEDIUM | Kronosnet: kronosnet: memory corruption and out-of-bounds access via malformed network pac |
| CVE-2026-16277 | 6.5 MEDIUM | Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist() |
| CVE-2026-15588 | 5.3 MEDIUM | Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering |
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V. Comments for CVE-2026-16254
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