Linux · Security advisory · September 17, 2026
RHSA-2026:67909: libevent security update
RHSA-2026:67909, released September 17, 2026, fixes 8 CVEs in libevent (version 2.1.13-1.el10_2). None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
8
1 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0129
70th percentile
Priority of the 8 CVEs
Patch now 0
Urgent 1
High 7
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libevent | RHEL 10 | 2.1.13-1.el10_2 |
CVEs this fix closes
| Priority | CVE | Title | Impact | 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 | 0.0078 | None reported | |
| High | CVE-2026-63379 | Libevent: HTTP Header smuggling | 8.6 | 0.0071 | None reported | |
| High | CVE-2026-63384 | Libevent: `evtag_unmarshal_header()` decodes a wire `uint32` length into a signed `int` return value. | 8.6 | 0.0052 | None reported | |
| High | CVE-2026-63383 | Libevent: decode_tag_internal() can lead to out-of-bounds read | 8.6 | 0.0049 | None reported | |
| High | CVE-2026-63387 | Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response | 8.6 | 0.0042 | None reported | |
| High | CVE-2026-63381 | Libevent: Dangling Pointer in `evbuffer_add_buffer_reference` | 8.6 | 0.0016 | None reported | |
| High | CVE-2026-63388 | Libevent: Heap out-of-bounds write in bufferevent_socket_set_conn_address_ reachable via AF_UNIX accept | 8.6 | 0.0014 | None reported |
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