CVE-2026-46193: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-h5pr-w979-v38m
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CVSS 5.5
Published
Advisory Summary

CVE-2026-46193 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-46193 at a Glance

CVE Identifier CVE-2026-46193
GHSA Identifier GHSA-h5pr-w979-v38m
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-46193

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.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-46193, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze 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 General Security Weakness. 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

In the Linux kernel, the following vulnerability has been resolved: xfrm: ah: account for ESN high bits in async callbacks AH allocates its temporary auth/ICV layout differently when ESN is enabled: the async ahash setup appends a 4-byte seqhi slot before the ICV or auth_data area, but the async completion callbacks still reconstruct the temporary layout as if seqhi were absent. With an async AH implementation selected, that makes AH copy or compare the wrong bytes on both the IPv4 and IPv6 paths. In UML repro on IPv4 AH with ESN and forced async hmac(sha1), ping fails with 100% packet loss, and the callback logs show the pre-fix drift: ah4 output_done: esn=1 err=0 icv_off=20 expected_off=24 ah4 input_done: esn=1 auth_off=20 expected_auth_off=24 icv_off=32 expected_icv_off=36 Reconstruct the callback-side layout the same way the setup path built it by skipping the ESN seqhi slot before locating the saved auth_data or ICV. Per RFC 4302, the ESN high-order 32 bits participate in the AH ICV computation, so the async callbacks must account for the seqhi slot. Post-fix, the same IPv4 AH+ESN+forced-async-hmac(sha1) UML repro shows the corrected offset (ah4 output_done: esn=1 err=0 icv_off=24 expected_off=24) and ping succeeds; net/ipv4/ah4.o and net/ipv6/ah6.o build clean at W=1. IPv6 AH+ESN was not exercised at runtime, and the change has not been tested against a real async hardware AH engine.

References

NVD — CVE-2026-46193 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46193
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-457936.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/0555d4f526... WEB
https://git.kernel.org/stable/c/0555d4f526232b3c9e3afbcd490c0c0793aefec6
git.kernel.org/stable/c/1dae77078c... WEB
https://git.kernel.org/stable/c/1dae77078ceb4bab833f7a4935f05c5b8c97b9ba
git.kernel.org/stable/c/2ffaa7a94f... WEB
https://git.kernel.org/stable/c/2ffaa7a94f9a4d22724364a1821735a0231d9f8d
git.kernel.org/stable/c/729899a2aa... WEB
https://git.kernel.org/stable/c/729899a2aa8bda7844be0cdcd3b470f11b912eda
git.kernel.org/stable/c/7db99a09b3... WEB
https://git.kernel.org/stable/c/7db99a09b3bc87268287bc7ab5f2e7f382b5ad87
git.kernel.org/stable/c/ec406c26c9... WEB
https://git.kernel.org/stable/c/ec406c26c97594124e79d14516b729a8d5dced62
git.kernel.org/stable/c/ec54093e6a... WEB
https://git.kernel.org/stable/c/ec54093e6a8f87e800bb6aa15eb7fc1e33faa524

Frequently Asked Questions

What is CVE-2026-46193?
CVE-2026-46193 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-46193?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-46193?
CVE-2026-46193 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-46193?
CVE-2026-46193 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-46193?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "id" : "GHSA-h5pr-w979-v38m",
  "modified" : "2026-10-15T03:36:04Z",
  "published" : "2026-05-28T12:30:32Z",
  "aliases" : [ "CVE-2026-46193" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: ah: account for ESN high bits in async callbacks\n\nAH allocates its temporary auth/ICV layout differently when ESN is enabled:\nthe async ahash setup appends a 4-byte seqhi slot before the ICV or\nauth_data area, but the async completion callbacks still reconstruct the\ntemporary layout as if seqhi were absent.\n\nWith an async AH implementation selected, that makes AH copy or compare\nthe wrong bytes on both the IPv4 and IPv6 paths. In UML repro on IPv4 AH\nwith ESN and forced async hmac(sha1), ping fails with 100% packet loss,\nand the callback logs show the pre-fix drift:\n\n  ah4 output_done: esn=1 err=0 icv_off=20 expected_off=24\n  ah4 input_done: esn=1 auth_off=20 expected_auth_off=24 icv_off=32 expected_icv_off=36\n\nReconstruct the callback-side layout the same way the setup path built it\nby skipping the ESN seqhi slot before locating the saved auth_data or ICV.\nPer RFC 4302, the ESN high-order 32 bits participate in the AH ICV\ncomputation, so the async callbacks must account for the seqhi slot.\n\nPost-fix, the same IPv4 AH+ESN+forced-async-hmac(sha1) UML repro shows\nthe corrected offset (ah4 output_done: esn=1 err=0 icv_off=24\nexpected_off=24) and ping succeeds; net/ipv4/ah4.o and net/ipv6/ah6.o\nbuild clean at W=1. IPv6 AH+ESN was not exercised at runtime, and the\nchange has not been tested against a real async hardware AH engine.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
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  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
  }, {
    "type" : "WEB",
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  }, {
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    "url" : "https://git.kernel.org/stable/c/7db99a09b3bc87268287bc7ab5f2e7f382b5ad87"
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    "url" : "https://git.kernel.org/stable/c/ec54093e6a8f87e800bb6aa15eb7fc1e33faa524"
  } ],
  "database_specific" : {
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}