CVE-2026-101356— Apache Tomcat: HTTP/2 request/response mix-up after error during async processing
Quick assessment
Affected
Apache Software Foundation Apache Tomcat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache Tomcat 中存在一个因对象回收与重用不当而导致的安全漏洞，该漏洞影响 HTTP/2 环境下异步 Servlet 的处理过程，可能引发不同用户之间的请求和/或响应数据混淆。 受影响的 Apache Tomcat 版本包括： 11.0.22 至 11.0.26 10.1.55 至 10.1.60 9.0.118 至 9.0.122 建议用户将版本升级至 11.0.27、10.1.61 或 9.0.123，这些版本已修复该问题。
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I. Basic Information for CVE-2026-101356
Vulnerability Information
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Vulnerability Title
Apache Tomcat: HTTP/2 request/response mix-up after error during async processing
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users.
This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122.
Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.22 ~ 11.0.26 | - |
|
II. Public POCs for CVE-2026-101356
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-101356 (1)
Same Patch Batch · Apache Software Foundation · 2026-10-20 · 20 CVEs total
| CVE-2026-86471 | 9.3 CRITICAL | Apache CouchDB: Admin credentials leading to code execution as operating system user |
| CVE-2026-90800 | 8.1 HIGH | Apache CouchDB: Auth bypass in prefixed _users and _replicator databases |
| CVE-2026-90797 | 7.7 HIGH | Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session |
| CVE-2026-107755 | 6.0 MEDIUM | Apache CouchDB: Credential Disclosure to Non-Owner Members via Object-Form Replication End |
| CVE-2026-90799 | 1.3 LOW | Apache CouchDB: Atom-table exhaustion in _changes sequences and _search bookmarks with spe |
| CVE-2026-90798 | 0.6 LOW | Apache CouchDB: Replicator follows redirects indefinitely |
| CVE-2026-88041 | Apache Tomcat: HTTP/2 trailer header cross-contamination | |
| CVE-2026-103119 | Apache Tomcat: AJP response mix-up | |
| CVE-2026-101296 | Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechani | |
| CVE-2026-93446 | Apache Tomcat: Possible TLS 1.3 connection failures | |
| CVE-2026-86467 | Apache Airflow Amazon provider: AWS auth manager: SAML login CSRF logs users into the atta | |
| CVE-2026-80353 | Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for | |
| CVE-2026-74049 | Apache Tomcat: Jasper JSTL <c:redirect> plug-in implementation omits page abort (SKIP_PAGE | |
| CVE-2026-74048 | Apache Tomcat: OpenSSL-FFM FIPS failure does not prevent start-up | |
| CVE-2026-108089 | Apache Cocoon: Unauthenticated access to diagnostic interfaces | |
| CVE-2026-108088 | Apache Cocoon: Cross-user cache poisoning | |
| CVE-2026-108087 | Apache Cocoon: SQL Injection | |
| CVE-2026-108086 | Apache Cocoon: XEE could lead to SSRF and information disclosure | |
| CVE-2026-92287 | Apache Arrow C++, PyArrow: Parquet file-controlled KMS URL is forwarded to pluggable KmsCl |
IV. Related Vulnerabilities
Same product: Apache Tomcat
-
CVE-2026-103119
Apache Tomcat: AJP response mix-up -
CVE-2026-101296
Apache Tomcat: JNDIRealm bind credential validation fails op -
CVE-2026-93446
Apache Tomcat: Possible TLS 1.3 connection failures -
CVE-2026-88041
Apache Tomcat: HTTP/2 trailer header cross-contamination -
CVE-2026-80353
Apache Tomcat: TOCTOU when setting specific permissions for
Same vendor: Apache Software Foundation
-
CVE-2026-107755
Apache CouchDB: Credential Disclosure to Non-Owner Members v -
CVE-2026-90800
Apache CouchDB: Auth bypass in prefixed _users and _replicat -
CVE-2026-90799
Apache CouchDB: Atom-table exhaustion in _changes sequences -
CVE-2026-90798
Apache CouchDB: Replicator follows redirects indefinitely -
CVE-2026-90797
Apache CouchDB: Pre-authentication gzip decompression bomb v
V. Comments for CVE-2026-101356
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