CVEs / CVE-2026-49975
CVE-2026-49975: Apache Software Foundation Apache HTTP Server vulnerability
- high 7.5 CVSS 3.1 (from the CNA)
- EPSS 32.9% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Apache Software Foundation Apache HTTP Server | from 2.4.17, up to and including 2.4.67 | — |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HScored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0) |
|---|---|
| Weakness | CWE-789, CWE-409 |
References
- CVE-2026-49975 on NVD
- https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/06/03/3 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2026/06/08/16 Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2026/06/msg00009.html Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:25042
- https://access.redhat.com/errata/RHSA-2026:25057
- https://access.redhat.com/errata/RHSA-2026:25090
- https://access.redhat.com/errata/RHSA-2026:25225
- https://access.redhat.com/errata/RHSA-2026:27114
- https://access.redhat.com/errata/RHSA-2026:27200
- https://access.redhat.com/errata/RHSA-2026:27201
- https://access.redhat.com/errata/RHSA-2026:36373
- https://access.redhat.com/errata/RHSA-2026:36831
- https://access.redhat.com/errata/RHSA-2026:36846
- https://access.redhat.com/errata/RHSA-2026:50538
- https://access.redhat.com/errata/RHSA-2026:50572
- https://access.redhat.com/errata/RHSA-2026:55930
- https://access.redhat.com/errata/RHSA-2026:55992
- https://access.redhat.com/security/cve/CVE-2026-49975
- https://bugzilla.redhat.com/show_bug.cgi?id=2485371
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.