CVE-2026-63893: Software Security Vulnerability Vulnerability
HIGHCVE-2026-63893 is a HIGH (CVSS 8.1) security vulnerability vulnerability (CWE-190: Integer Overflow or Wraparound) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. this occurs when an integer value is incremented to a value that is too large to store in the associated representation. when this occurs, the value may become a very small or negative number.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-63893 at a Glance
Security Impact
CVSS: 8.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).
How to Fix CVE-2026-63893
To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-63893, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-190: Integer Overflow or Wraparound, where the product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. this occurs when an integer value is incremented to a value that is too large to store in the associated representation. when this occurs, the value may become a very small or negative number. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
References
Frequently Asked Questions
What is CVE-2026-63893?
Which Software versions are affected?
What version fixes CVE-2026-63893?
What is the CVSS score of CVE-2026-63893?
What CWE is associated with CVE-2026-63893?
How can I check Maven dependencies for CVE-2026-63893?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-x965-jq5m-mrm4",
"modified" : "2026-07-20T15:31:50Z",
"published" : "2026-07-19T18:31:44Z",
"aliases" : [ "CVE-2026-63893" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: property: Reject u32 wrap in tb_property_entry_valid()\n\nentry->value is u32 and entry->length is u16; the sum is performed in\nu32 and wraps. A malicious XDomain peer can pick\nvalue = 0xffffff00, length = 0x100 so the sum 0x100000000 wraps to 0\nand passes the > block_len check. tb_property_parse() then passes\nentry->value to parse_dwdata() as a dword offset into the property\nblock, reading attacker-directed memory far past the allocation.\n\nFor TEXT-typed entries with the \"deviceid\" or \"vendorid\" keys this\nlands in xd->device_name / xd->vendor_name and is readable back via\nthe per-XDomain device_name / vendor_name sysfs attributes; the leak\nis NUL-bounded (kstrdup() stops at the first zero byte) and\nuntargeted (the attacker picks a delta, not an absolute address).\nDATA-typed entries are parsed into property->value.data but not\ngenerically surfaced to userspace.\n\nUse check_add_overflow() so a wrapped sum is rejected.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-63893"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/01deda0152066c6c955f0619114ea6afa070aaec"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/31b98e503ecca8077e5247253dd5425ab84bc96d"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/5c06a3043ad944f087bb2ae0aae28d820bb9f460"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/6a63623621639acbb39bc2d9fb09559681716695"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/8d4a758b407ab3de3be86d1ceadfa35d717d30c7"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/9fee50c4e1e42f6d3cbe30df584f9f648f626071"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/a47784aee77f33f786dc5d7375db821bdae68792"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/e8a0b0a93a6ef958e70b1dd4930beb6dc0026b36"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-190" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-19T16:17:06Z"
}
}