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CVE-2026-29169— Apache HTTP Server: mod_dav_lock indirect lock crash

EPSS 0.36% · P58
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I. Basic Information for CVE-2026-29169

Vulnerability Information
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Vulnerability Title
Apache HTTP Server: mod_dav_lock indirect lock crash
Source: NVD (National Vulnerability Database)
Vulnerability Description
A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache HTTP Server 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache HTTP Server是美国阿帕奇（Apache）基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server 2.4.66及之前版本存在代码问题漏洞，该漏洞源于mod_dav_lock中存在空指针取消引用，可能导致攻击者通过恶意请求崩溃服务器。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Apache Software FoundationApache HTTP Server 0 ~ 2.4.66 -

II. Public POCs for CVE-2026-29169

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III. Intelligence Information for CVE-2026-29169

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Same Patch Batch · Apache Software Foundation · 2026-05-04 · 17 CVEs total

CVE-2026-428109.9 CRITICALApache Polaris: could broaden vended S3 credentials through wildcard-bearing namespace or
CVE-2026-428119.9 CRITICALApache Polaris: could broaden vended GCS credentials through unescaped identifier content
CVE-2026-428099.9 CRITICALApache Polaris: staged table creation could vend storage credentials for unvalidated locat
CVE-2026-428129.9 CRITICALApache Polaris: No protection on `write.metadata.path`
CVE-2026-40682Apache OpenNLP: XXE via Dictionary Parsing in DictionaryEntryPersistor
CVE-2026-42027Apache OpenNLP: Arbitrary Class Instantiation via Model Manifest in ExtensionLoader
CVE-2026-42440Apache OpenNLP: OOM DoS via Unbounded Array Allocation in AbstractModelReader
CVE-2026-40563Apache Atlas: Script injection allows access to unintended data
CVE-2026-23918Apache HTTP Server: http2: double free and possible RCE on early reset
CVE-2026-33006Apache HTTP Server: mod_auth_digest timing attack
CVE-2026-33007Apache HTTP Server: mod_authn_socache crash
CVE-2026-33523Apache HTTP Server: multiple modules: HTTP response splitting forwarding malicious status
CVE-2026-33857Apache HTTP Server: Off-by-one OOB reads in AJP getter functions
CVE-2026-34032Apache HTTP Server: mod_proxy_ajp: Heap Buffer Over-Read Due to Missing Null-Termination C
CVE-2026-34059Apache HTTP Server: mod_proxy_ajp: Heap Over-Read and memory disclosure in ajp_parse_data
CVE-2026-24072Apache HTTP Server: mod_rewrite elevation of privileges via ap_expr

IV. Related Vulnerabilities

Same product: Apache HTTP Server
Same vendor: Apache Software Foundation
Same weakness: CWE-476

V. Comments for CVE-2026-29169

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