VulnerabilityModified
CVE-2026-49975
Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests.
HIGH 7.5EPSS 34.3%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 34.3%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 34.30% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-789, CWE-409
- Affected
- apache/http server · debian/debian linux
- Source
- security@apache.org
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/06/03/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2026/06/08/16Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2026/06/msg00009.htmlMailing 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
- https://github.com/EQSTLab/CVE-2026-49975Exploit, Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49975.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.