CVE-2026-15310: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-xj79-6hh5-9w6q
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CWE-400
Published
Advisory Summary

CVE-2026-15310 is a LOW security vulnerability vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly control the allocation and maintenance of a limited resource.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-15310 at a Glance

CVE Identifier CVE-2026-15310
GHSA Identifier GHSA-xj79-6hh5-9w6q
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-15310

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-2026-15310, 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 CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. 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

When decompressing crafted zip files using the bzip/LZMA/Zstandard compressions, Python could use an attacker-controlled size to pre-allocate memory, possibly resulting in memory exhaustion.

References

NVD — CVE-2026-15310 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15310
Software Source Repository REPOSITORY
https://github.com/python/cpython/issues/156002
Software Source Repository REPOSITORY
https://github.com/python/cpython/pull/156003
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/09a2e7e6678b4f65449e7ad8f112c48f944591e2
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/1b424c0178a01e155fd0267dc28a8fc1159b33a8
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/31980e84b9a708424a0a1dfecde3fc991e313f89
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/6257029de42ef89b67f3d20137de87d43e197530
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/9d167992b59cf5e23c66b9ed742b13f5925f7d70
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/c2bfbcdd1a11690507a10bc0998f95b8dc6b6fac
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/dcdd406ddbfc4cb29b24c3df17cbabe21d316ce1
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/e2311cfb3dd518f008f312fe0631f4f7490d237a
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/f507e6946a3194e83e1d7b8ee6e14567175e46de
Security Fix Commit FIX COMMIT
https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7d4
Software Security Information SECURITY
https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXURX2WZGKGNA4ANYBQS2VZRYQ5JNK

Frequently Asked Questions

What is CVE-2026-15310?
CVE-2026-15310 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-15310?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-15310?
CVE-2026-15310 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Maven dependencies for CVE-2026-15310?
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 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xj79-6hh5-9w6q",
  "modified" : "2026-10-01T03:31:11Z",
  "published" : "2026-08-25T15:33:00Z",
  "aliases" : [ "CVE-2026-15310" ],
  "details" : "When decompressing crafted zip files using the bzip/LZMA/Zstandard \n\ncompressions, Python could use an attacker-controlled size to \n\npre-allocate memory, possibly resulting in memory exhaustion.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-15310"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/issues/156002"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/pull/156003"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/09a2e7e6678b4f65449e7ad8f112c48f944591e2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/1b424c0178a01e155fd0267dc28a8fc1159b33a8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/31980e84b9a708424a0a1dfecde3fc991e313f89"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/6257029de42ef89b67f3d20137de87d43e197530"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/9d167992b59cf5e23c66b9ed742b13f5925f7d70"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/c2bfbcdd1a11690507a10bc0998f95b8dc6b6fac"
  }, {
    "type" : "WEB",
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    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/e2311cfb3dd518f008f312fe0631f4f7490d237a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/f507e6946a3194e83e1d7b8ee6e14567175e46de"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7d4"
  }, {
    "type" : "WEB",
    "url" : "https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXURX2WZGKGNA4ANYBQS2VZRYQ5JNK"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-25T15:16:30Z"
  }
}