Linux · 
Fedora · Security advisory · September 7, 2026
Fedora · Security advisory · September 7, 2026FEDORA-2026-728DD9F704: Security update for 5 packages
FEDORA-2026-728DD9F704, released September 7, 2026, fixes 4 CVEs across 5 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
4
1 rated Critical
Exploited
0
None reported
Highest CVSS
8.6
Base score, 0 to 10
Highest EPSS
0.0199
80th percentile
Priority of the 4 CVEs
Patch now 0
Urgent 1
High 3
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libevent | Fedora 43 | 2.1.13-1.fc43 |
| libevent-debuginfo | Fedora 43 | 2.1.13-1.fc43 |
| libevent-debugsource | Fedora 43 | 2.1.13-1.fc43 |
| libevent-devel | Fedora 43 | 2.1.13-1.fc43 |
| libevent-doc | Fedora 43 | 2.1.13-1.fc43 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2026-63385 | Libevent: HTTP header handling bugs create risk of access control bypass. | 8.6 | 0.0129 | None reported |
| High | CVE-2026-63382 | libevent: Libevent is an event notification library | 8.6 | 0.0199 | None reported |
| High | CVE-2026-63379 | Libevent: HTTP Header smuggling | 8.6 | 0.0052 | None reported |
| High | CVE-2026-63381 | Libevent: Dangling Pointer in `evbuffer_add_buffer_reference` | 8.6 | 0.0012 | None reported |
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