Search for vulnerabilities
Vulnerability details: VCID-yuy2-dbmk-93f7
Vulnerability ID VCID-yuy2-dbmk-93f7
Aliases CVE-2009-1891
Summary A denial of service flaw was found in the mod_deflate module. This module continued to compress large files until compression was complete, even if the network connection that requested the content was closed before compression completed. This would cause mod_deflate to consume large amounts of CPU if mod_deflate was enabled for a large file.
Status Published
Exploitability 0.5
Weighted Severity 2.1
Risk 1.1
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.08029 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.08029 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.08029 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
epss 0.14811 https://api.first.org/data/v1/epss?cve=CVE-2009-1891
apache_httpd low https://httpd.apache.org/security/json/CVE-2009-1891.json
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2009-1891.json
https://api.first.org/data/v1/epss?cve=CVE-2009-1891
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1891
509125 https://bugzilla.redhat.com/show_bug.cgi?id=509125
534712 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534712
CVE-2009-1891 https://httpd.apache.org/security/json/CVE-2009-1891.json
RHSA-2009:1148 https://access.redhat.com/errata/RHSA-2009:1148
RHSA-2009:1155 https://access.redhat.com/errata/RHSA-2009:1155
RHSA-2009:1160 https://access.redhat.com/errata/RHSA-2009:1160
RHSA-2009:1205 https://access.redhat.com/errata/RHSA-2009:1205
USN-802-1 https://usn.ubuntu.com/802-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.91804
EPSS Score 0.08029
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:28:49.506126+00:00 Apache HTTPD Importer Import https://httpd.apache.org/security/json/CVE-2009-1891.json 37.0.0