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Vulnerability · Published Aug 20, 2026 · Assigned by VulnCheck

CVE-2026-75140jsoup Uncontrolled Resource Consumption in XmlTreeBuilder

High 7.5

In plain English

A high-severity resource allocation without limits in soup from jhy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 55.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

jsoup through 1.23.2, fixed in commit 862ba2f, contains an uncontrolled resource consumption vulnerability in XmlTreeBuilder that allows remote attackers to exhaust JVM heap memory by supplying a deeply nested XML document with uniquely-namespaced elements. The builder copies the entire inherited namespace map on every start element, causing quadratic time and memory complexity, which attackers can exploit to trigger an OutOfMemoryError and terminate the application.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12jsoupno fix listedDEBIAN-CVE-2026-75140
Debian:13jsoupno fix listedDEBIAN-CVE-2026-75140
Debian:14jsoup1.23.2-1DEBIAN-CVE-2026-75140
Mavenorg.jsoup:jsoup1.23.2GHSA-65r4-943x-97jj
Ubuntu:22.04:LTSjsoupno fix listedUBUNTU-CVE-2026-75140
Ubuntu:24.04:LTSjsoupno fix listedUBUNTU-CVE-2026-75140
Ubuntu:26.04:LTSjsoupno fix listedUBUNTU-CVE-2026-75140
Ubuntu:26.10jsoupno fix listedUBUNTU-CVE-2026-75140

Affected products (as reported)

VendorProductVersions
jhy soup 0 – through 1.23.1

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References