Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}
Published Oct 1, 2026
9.8
CRITICALCVSS 3.1
Description
Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...})
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
Affected products
-
- Version 2.4.0StatusaffectedConstraints<=2.4.68
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Oct 1, 2026 · SSVC 2.0.3
No EPSS score for this CVE.
References (1)
- https://httpd.apache.org/security/vulnerabilities_24.html vendor-advisory
| Link | Providers | Tags |
|---|---|---|
| https://httpd.apache.org/security/vulnerabilities_24.html | vendor-advisory |
Change history (0)
No recorded changes yet.