Vulnerability · Published Oct 1, 2026 · Assigned by apache
CVE-2026-59685Apache HTTP Server: Out-of-Bounds Write in ap_directory_walk() Canonical-Name Rewrite on CASE_BLIND_FILESYSTEM
High 7.5
In plain English
A high-severity out-of-bounds write in Apache HTTP Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 59.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Out-of-bounds Write vulnerability in Apache HTTP Server on Windows while processing paths with 8.3 names that may grow when expanded. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.21 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-59685 |
| Alpine:v3.22 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-59685 |
| Alpine:v3.23 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-59685 |
| Alpine:v3.24 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-59685 |
| Debian:12 | apache2 | no fix listed | DEBIAN-CVE-2026-59685 |
| Debian:13 | apache2 | no fix listed | DEBIAN-CVE-2026-59685 |
| Debian:14 | apache2 | no fix listed | DEBIAN-CVE-2026-59685 |
| Ubuntu:22.04:LTS | apache2 | no fix listed | UBUNTU-CVE-2026-59685 |
| Ubuntu:24.04:LTS | apache2 | no fix listed | UBUNTU-CVE-2026-59685 |
| Ubuntu:26.04:LTS | apache2 | no fix listed | UBUNTU-CVE-2026-59685 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.0 – through 2.4.68 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N