CVE-2026-42528— Apache HTTP Server: mod_dav shared lock overflow
Quick assessment
Affected
Apache Software Foundation Apache HTTP Server
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 httpd 2.4.67 及更早版本中的 mod_dav 模块存在一个内存计算错误，允许拥有创建 WebDAV 锁权限的攻击者导致服务器子进程崩溃。 建议用户升级到版本 2.4.69，该版本已修复此问题。
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-42528
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 HTTP Server: mod_dav shared lock overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes.
Users are recommended to upgrade to version 2.4.69, which fixes this issue
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 0 ~ 2.4.68 | - |
|
II. Public POCs for CVE-2026-42528
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-42528
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-42528 (1)
Same Patch Batch · Apache Software Foundation · 2026-10-01 · 28 CVEs total
| CVE-2026-88789 | 8.6 HIGH | Apache Camel Quarkus: Camel Quarkus: Forced Xalan TransformerFactory drops upstream extern |
| CVE-2026-94250 | 8.2 HIGH | Apache APISIX: Batch response aggregation can exhaust worker memory |
| CVE-2026-94212 | 6.4 MEDIUM | Apache APISIX: unauthenticated impersonation issue in saml-auth |
| CVE-2026-94269 | 6.3 MEDIUM | Apache APISIX: Servlet-style normalization creates a route/upstream authorization mismatch |
| CVE-2026-78242 | 5.7 MEDIUM | Apache APISIX: data-mask may fail to redact request headers in logger output |
| CVE-2026-82806 | 5.3 MEDIUM | Apache APISIX: cross-request permission pollution via static permission list mutation |
| CVE-2026-94276 | 5.1 MEDIUM | Apache APISIX: Openid-connect introspection validation issue |
| CVE-2026-94220 | 2.1 LOW | Apache APISIX: session fixation issue in feishu-auth and dingtalk-auth plugin |
| CVE-2026-56154 | Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...} | |
| CVE-2026-42356 | Apache HTTP Server: limited RCE for some internal redirects to non-CGI files in CGI direct | |
| CVE-2026-46729 | Apache HTTP Server: mod_heartmonitor denial of service | |
| CVE-2026-47360 | Apache HTTP Server: mod_session: Session cookie not removed during internal redirect | |
| CVE-2026-48005 | Apache HTTP Server: mod_auth_digest reauthentication attack | |
| CVE-2026-56153 | Apache HTTP Server: mod_charset_lite: Heap overflow in finish_partial_char | |
| CVE-2026-63686 | Apache HTTP Server: mod_xml2enc crash on charset conversion failure | |
| CVE-2026-56449 | Apache HTTP Server: mod_proxy_html: crash in dump_content | |
| CVE-2026-57941 | Apache HTTP Server: mod_http2 use-after-free / wild write via shared session->bbtmp re-ent | |
| CVE-2026-58415 | Apache HTTP Server: mod_dav_fs property database read access | |
| CVE-2026-59685 | Apache HTTP Server: Out-of-Bounds Write in ap_directory_walk() Canonical-Name Rewrite on C | |
| CVE-2026-59797 | Apache HTTP Server: mod_ssl SSLRequire allows .htaccess ap_expr file-function |
Showing top 20 of 28 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Apache HTTP Server
-
CVE-2026-63686
Apache HTTP Server: mod_xml2enc crash on charset conversion -
CVE-2026-93546
Apache HTTP Server: mod_dav_fs namespace overflow -
CVE-2026-79768
Apache HTTP Server: mod_userdir information disclosure -
CVE-2026-73637
Apache HTTP Server: mod_auth_digest DoS attack -
CVE-2026-73636
Apache HTTP Server: mod_auth_digest one-time-nonce replay at
Same vendor: Apache Software Foundation
-
CVE-2026-63686
Apache HTTP Server: mod_xml2enc crash on charset conversion -
CVE-2026-93546
Apache HTTP Server: mod_dav_fs namespace overflow -
CVE-2026-79768
Apache HTTP Server: mod_userdir information disclosure -
CVE-2026-73637
Apache HTTP Server: mod_auth_digest DoS attack -
CVE-2026-73636
Apache HTTP Server: mod_auth_digest one-time-nonce replay at
Same weakness: CWE-789
-
CVE-2026-102504
Imager versions before 1.037 for Perl exit the process readi -
CVE-2026-102510
Apache PLC4X: Go binding: unbounded allocation and framing f -
CVE-2026-102509
Apache PLC4X, Apache PLC4X: Pre-authentication resource exha -
CVE-2026-102809
PX4 Autopilot through 1.17.0 Stack Exhaustion via tests file -
CVE-2026-92550
Apache Qpid Broker-J: Type size/count handling can lead to e
V. Comments for CVE-2026-42528
No comments yet