CVE-2026-80353— Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for CVE-2026-65183 did not address APR connector
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.
在 Apache Tomcat 中，当为 APR/Native 连接器创建 Unix 域套接字时，存在检查与使用之间的竞态条件（TOCTOU）漏洞，这使得未授权的本地用户能够访问该 Unix 域套接字。此前针对 CVE-2026-65183 的修复仅解决了 NIO 连接器中的问题，并未修复 APR/Native 连接器中存在的相同漏洞。 该漏洞影响 Apache Tomcat 版本范围：从 9.0.47 到 9.0.122。 建议用户升级至 9.0.123 版本，该版本已修复此问题。
Possible ATT&CK Techniques 2 AI
T1552 · Unsecured Credentials T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-80353
Vulnerability Information
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Vulnerability Title
Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for CVE-2026-65183 did not address APR connector
Source: CVE Program / CVE List V5
Vulnerability Description
Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-65183 only addressed the NIO connector. It did not address the same issue in the APR/Native connector.
This issue affects Apache Tomcat: from 9.0.47 through 9.0.122.
Users are recommended to upgrade to version 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
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 9.0.47 ~ 9.0.122 | - |
|
II. Public POCs for CVE-2026-80353
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-80353 (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-2026-93446 | Apache Tomcat: Possible TLS 1.3 connection failures | |
| CVE-2026-103119 | Apache Tomcat: AJP response mix-up | |
| CVE-2026-101356 | Apache Tomcat: HTTP/2 request/response mix-up after error during async processing | |
| CVE-2026-101296 | Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechani | |
| CVE-2026-86467 | Apache Airflow Amazon provider: AWS auth manager: SAML login CSRF logs users into the atta | |
| CVE-2026-88041 | Apache Tomcat: HTTP/2 trailer header cross-contamination | |
| 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 |
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