CVE-2026-103885— Apache Directory LDAP API: Denial of service via crafted telephone number values
Quick assessment
Affected
Apache Software Foundation Apache Directory LDAP API
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 Directory LDAP API 中的非对称资源消耗漏洞。 在使用该 LDAP API 的 LDAP 服务器（例如 Apache DS）中，处理某些恶意构造的电话号码时，可能导致某个 CPU 核心被完全占用（CPU 使用率达到 100%），且这种高资源消耗状态将持续 indefinitely（无限期持续）。 此问题影响 Apache Directory LDAP API 的以下版本范围：从 2.1.0 到 2.1.9 之前的所有版本。 建议用户升级至已修复该漏洞的版本 2.1.9。
Possible ATT&CK Techniques 1 AI
T1496 · Resource HijackingAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache Directory LDAP API | 2.1.0< 2.1.9 |
affected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-103885
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Apache Directory LDAP API: Denial of service via crafted telephone number values
Source: CVE Program / CVE List V5
Vulnerability Description
Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.
A LDAP server using the LDAP API (like Apache DS) may consume 100% of a CPU core indefinitely when processing some badly crafted Telephone Numbers.
This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.
Users are recommended to upgrade to version 2.1.9, 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 Directory LDAP API | 2.1.0 ~ 2.1.9 | - |
|
II. Public POCs for CVE-2026-103885
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-103885
请登录查看更多情报信息。
Mailing List Discussions for CVE-2026-103885 (1)
Same Patch Batch · Apache Software Foundation · 2026-10-02 · 69 CVEs total
| CVE-2026-102795 | 9.3 CRITICAL | Apache Traffic Server: SNI to Host header matching policy is not properly enforced |
| CVE-2026-91135 | 9.2 CRITICAL | Apache Thrift: C++ `THeaderTransport::transform()` heap buffer overflow (write direction) |
| CVE-2026-83632 | 9.2 CRITICAL | Apache Thrift: C++ THttpTransport grows its line buffer without bound |
| CVE-2026-61373 | 8.7 HIGH | Apache Thrift: Java TSaslNonblockingServer pre-auth unbounded SASL frame allocation |
| CVE-2026-66859 | 8.7 HIGH | Apache Thrift: c_glib multiplexed processor crashes on a message it cannot route |
| CVE-2026-94658 | 8.7 HIGH | Apache Thrift: Lua `TFramedTransport`/`THttpTransport` re-slice the buffer on every read ( |
| CVE-2026-94646 | 8.7 HIGH | Apache Thrift: Node.js `server.js` ends the process on any per-connection error (+ two tri |
| CVE-2026-87117 | 8.7 HIGH | Apache Thrift: PHP `thrift_protocol` accelerator dereferences a missing container-element |
| CVE-2026-86535 | 8.7 HIGH | Apache Thrift: A JSON member name can stall the Node server's event loop indefinitely |
| CVE-2026-82458 | 8.7 HIGH | Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, |
| CVE-2026-96294 | 8.7 HIGH | Apache Thrift: nodejs web server: no `error` listener on an upgraded WebSocket connection |
| CVE-2026-86537 | 8.7 HIGH | Apache Thrift: A truncated HTTP request stops the D library's server, allowing an unauthen |
| CVE-2026-94642 | 8.7 HIGH | Apache Thrift: PHP `TSimpleServer` exits the whole process on any non-transport exception |
| CVE-2026-85493 | 8.7 HIGH | Apache Thrift, Apache Thrift: TProtocolUtil.skip follows peer-chosen nesting to any depth |
| CVE-2026-85494 | 8.7 HIGH | Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, |
| CVE-2026-91137 | 8.7 HIGH | Apache Thrift: PHP `thrift_protocol` accelerator: zero-byte container elements |
| CVE-2026-93925 | 8.7 HIGH | Apache Thrift: C++ `THeaderTransport::writeVarint32()` stack buffer overflow on a negative |
| CVE-2026-93926 | 8.7 HIGH | Apache Thrift: C++ `THeaderTransport::untransform()` leaks the zlib stream on the error pa |
| CVE-2026-94633 | 8.7 HIGH | Apache Thrift: Dart `TBinaryProtocol.readMessageBegin` allocates from the pre-versioned na |
| CVE-2026-94635 | 8.7 HIGH | Apache Thrift: Lua `TBinaryProtocol:readMessageBegin` bypasses `checkStringSize` on the pr |
Showing top 20 of 69 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Apache Directory LDAP API
-
CVE-2026-103877
Apache Directory LDAP API: Unsafe loading of Java code from -
CVE-2026-103880
Apache Directory LDAP API: Denial of service via excessive b -
CVE-2026-103878
Apache Directory LDAP API: Injection of plaintext responses -
CVE-2026-103552
Apache Directory LDAP API: A unbound client can send a deepl -
CVE-2026-102731
Apache Directory LDAP API: Denial of service via excessive m
Same vendor: Apache Software Foundation
-
CVE-2026-102795
Apache Traffic Server: SNI to Host header matching policy is -
CVE-2026-59265
Apache OpenOffice, Apache OpenOffice: Opening a malicious do -
CVE-2026-66054
Apache Thrift: C++ THeaderTransport does not enforce configu -
CVE-2026-61374
Apache Thrift: Java TSaslTransport post-auth data-frame miss -
CVE-2026-63772
Apache Thrift: Unauthenticated single-packet crash of Go Thr
V. Comments for CVE-2026-103885
No comments yet