CVE-2026-49975
High
Description
Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apache Http Server
PublishedJun 8, 2026
First seenJun 8, 2026
Weakness typeCWE-789CWE-789
How to fix
Update
- apache http_server2.4.68 or later
Vendor advisories
- httpd.apache.org/security/vulnerabilities_24.html
- access.redhat.com/errata/RHSA-2026:27200
- access.redhat.com/errata/RHSA-2026:50538
- access.redhat.com/errata/RHSA-2026:25225
- access.redhat.com/errata/RHSA-2026:25090
- access.redhat.com/errata/RHSA-2026:36846
- access.redhat.com/errata/RHSA-2026:36831
- access.redhat.com/errata/RHSA-2026:36373
- access.redhat.com/errata/RHSA-2026:55930
- access.redhat.com/errata/RHSA-2026:55992
- access.redhat.com/errata/RHSA-2026:50572
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache http_server | 2.4.17 ≤ v < 2.4.68 | 2.4.68 |
| debian debian_linux | 11.0 | — |
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