CVE-2026-75140: Allocation of Resources Without Limits or Throttling in jhy soup
Description
jsoup versions up to 1.23.1 contain a vulnerability in XmlTreeBuilder that allows remote attackers to cause excessive memory consumption by submitting deeply nested XML documents with unique namespaces. This leads to quadratic memory and time complexity, potentially causing an OutOfMemoryError and application termination. The issue was fixed in a later commit.
CVSS v4.0
Score 8.7high
Affected software
jhy
soup
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-75140 is an uncontrolled resource consumption vulnerability in jsoup's XmlTreeBuilder component present in versions up to 1.23.1. The vulnerability arises because the builder copies the entire inherited namespace map on every start element, resulting in quadratic time and memory complexity when processing deeply nested XML documents with uniquely-namespaced elements. Attackers can exploit this behavior to exhaust JVM heap memory, triggering an OutOfMemoryError and causing the application to terminate. The vulnerability was fixed in commit 862ba2f.
Potential Impact
Remote attackers can supply crafted XML documents that cause jsoup to consume excessive JVM heap memory, leading to an OutOfMemoryError and application crash. This results in denial of service conditions for applications using vulnerable versions of jsoup.
Mitigation Recommendations
A fix is available and was introduced in commit 862ba2f. Users should upgrade jsoup to a version that includes this fix, i.e., versions after 1.23.1. No other mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-17T18:39:57.661Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a87265dacd9273b49d54f63
Added to database: 08/20/2026, 16:07:57 UTC
Last enriched: 09/10/2026, 23:32:23 UTC
Last updated: 10/04/2026, 18:53:18 UTC
Views: 113
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