CVE-2026-108086— Apache Cocoon: XEE could lead to SSRF and information disclosure
Quick assessment
Affected
Apache Software Foundation Apache Cocoon
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.
当被分配时不受支持：Apache Cocoon 中存在 DTD 中递归实体引用限制不当的漏洞（即"XML 实体扩展”漏洞）。 该问题影响 Apache Cocoon 的所有版本。在 表单处理器中存在的 XML 外部实体（XEE）漏洞可能导致服务器端请求伪造（SSRF），包括将服务器文件泄露给不受信任的外部系统。 由于该项目已停止维护，我们计划不再发布修复此问题的新版本。建议用户寻找替代方案，或将实例的访问权限限制为仅受信任的用户。 注意：此漏洞仅影响维护者已不再支持的产品。
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache Cocoon | ≤ * |
affected |
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I. Basic Information for CVE-2026-108086
Vulnerability Information
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Vulnerability Title
Apache Cocoon: XEE could lead to SSRF and information disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
** UNSUPPORTED WHEN ASSIGNED ** Improper restriction of recursive entity references in DTDs ('XML entity expansion') vulnerability in Apache Cocoon.
This issue affects Apache Cocoon: all versions. XEE in the fp: form processor could lead to SSRF, including exposing files from the server to an untrusted external system
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.
NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
DTD中递归实体索引的不恰当限制(XML实体扩展)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Cocoon | 0 ~ * | - |
|
II. Public POCs for CVE-2026-108086
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2026-108086 (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-2026-80353 | 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-2026-92287 | Apache Arrow C++, PyArrow: Parquet file-controlled KMS URL is forwarded to pluggable KmsCl |
IV. Related Vulnerabilities
Same product: Apache Cocoon
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CVE-2026-108089
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CVE-2026-108088
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CVE-2026-108087
Apache Cocoon: SQL Injection -
CVE-2025-24783
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Same vendor: Apache Software Foundation
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CVE-2026-107755
Apache CouchDB: Credential Disclosure to Non-Owner Members v -
CVE-2026-90800
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CVE-2026-90799
Apache CouchDB: Atom-table exhaustion in _changes sequences -
CVE-2026-90798
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CVE-2026-90797
Apache CouchDB: Pre-authentication gzip decompression bomb v
Same weakness: CWE-776
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V. Comments for CVE-2026-108086
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