Apache Tomcat: HTTP/2 trailer header cross-contamination
CVSS score
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EPSS probability
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Risk score
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Published
3 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%55
Short explanation
An incomplete cleanup vulnerability in Apache Tomcat allows trailer information from a previous request to leak into a subsequent request, tracked as CVE-2026-88041 [S0, S1].
This security issue can compromise application security by causing sensitive HTTP/2 data to cross-contaminate between requests [S0, S1].
What should be done?
- Upgrade Apache Tomcat to version 11.0.27
- Upgrade Apache Tomcat to version 10.1.61
- Upgrade Apache Tomcat to version 9.0.123
Chain of evidence and sources
Apache Tomcat içindeki eksik temizleme zafiyeti, önceki isteklere ait fragman bilgilerinin sonraki isteklere sızmasına neden olur.
Zafiyet 11.0.0-M23 ile 11.0.26, 10.1.27 ile 10.1.60 ve 9.0.92 ile 9.0.122 arasındaki Apache Tomcat sürümlerini etkiler.
Show the technical text from the sources
Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into a subsequent request. This issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.26, from 10.1.27 through 10.1.60, from 9.0.92 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.
CWE: CWE-459
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-88041 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Apache Software Foundation | Apache Tomcat | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-88041 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-88041 weaknesses.
Official Sources and Advisories
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Weakness Type (CWE & CAPEC)
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