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USN-8710-1: libevent vulnerabilities

🗓️ 01 Sep 2026 15:27:40Reported by UbuntuType 
ubuntu
 ubuntu🔗 ubuntu.com👁 7 Views

Multiple libevent vulnerabilities enabling code execution, HTTP smuggling, and security bypass.

Related
Packages
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC		The vulnerability of the evbuffer_add_buffer_reference() function in the Libevent event-driven library allows a attacker to cause a service failure.
26 Aug 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the evhttp_find_header() function in the evhttp HTTP parser library from the asynchronous event notification library Libevent allows a attacker to cause a service failure.
26 Aug 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the decode_tag_internal() function in the Libevent asynchronous event notification library allows a attacker to cause a service failure.
26 Aug 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the evtag_unmarshal_header() function in the Libevent asynchronous event notification library allows a attacker to cause a service failure.
26 Aug 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the evhttp_decode_uri_internal() function in the Libevent asynchronous event notification library allows a attacker to cause a service failure.
26 Aug 202600:00
–bdu_fstec
cbl_mariner
CBLMariner		CVE-2026-63384 affecting package libevent for versions less than 2.1.13-1
2 Sep 202620:43
–cbl_mariner
cbl_mariner
CBLMariner		CVE-2026-63383 affecting package libevent for versions less than 2.1.13-1
2 Sep 202620:43
–cbl_mariner
cbl_mariner
CBLMariner		CVE-2026-63382 affecting package libevent for versions less than 2.1.13-1
2 Sep 202620:43
–cbl_mariner
cbl_mariner
CBLMariner		CVE-2026-63385 affecting package libevent for versions less than 2.1.13-1
2 Sep 202620:43
–cbl_mariner
cbl_mariner
CBLMariner		CVE-2026-63381 affecting package libevent for versions less than 2.1.13-1
2 Sep 202620:43
–cbl_mariner
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OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu14.04alllibevent-2.0-52.0.21-stable-1ubuntu1.14.04.2+esm1libevent-2.0-5_2.0.21-stable-1ubuntu1.14.04.2+esm1_all.deb
Ubuntu16.04alllibevent-2.0-52.0.21-stable-2ubuntu0.16.04.1+esm1libevent-2.0-5_2.0.21-stable-2ubuntu0.16.04.1+esm1_all.deb
Ubuntu18.04alllibevent-2.1-62.1.8-stable-4ubuntu0.1~esm1libevent-2.1-6_2.1.8-stable-4ubuntu0.1~esm1_all.deb
Ubuntu20.04alllibevent-2.1-72.1.11-stable-1ubuntu0.1~esm1libevent-2.1-7_2.1.11-stable-1ubuntu0.1~esm1_all.deb
Ubuntu22.04amd64libevent-2.1-72.1.12-stable-1ubuntu0.1libevent-2.1-7_2.1.12-stable-1ubuntu0.1_amd64.deb
Ubuntu22.04arm64libevent-2.1-72.1.12-stable-1ubuntu0.1libevent-2.1-7_2.1.12-stable-1ubuntu0.1_arm64.deb
Ubuntu22.04armhflibevent-2.1-72.1.12-stable-1ubuntu0.1libevent-2.1-7_2.1.12-stable-1ubuntu0.1_armhf.deb
Ubuntu22.04i386libevent-2.1-72.1.12-stable-1ubuntu0.1libevent-2.1-7_2.1.12-stable-1ubuntu0.1_i386.deb
Ubuntu22.04ppc64ellibevent-2.1-72.1.12-stable-1ubuntu0.1libevent-2.1-7_2.1.12-stable-1ubuntu0.1_ppc64el.deb
Ubuntu22.04riscv64libevent-2.1-72.1.12-stable-1ubuntu0.1libevent-2.1-7_2.1.12-stable-1ubuntu0.1_riscv64.deb
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01 Sep 2026 15:27Current
6.9Medium risk
Vulners AI Score6.9
CVSS 49.2
EPSS0.00587
SSVC
libeventuse-after-freeHTTP smugglingout-of-bounds readsecurity bypassdenial of service
7