Vendor
Libevent vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in Libevent: 0 in the last 7 days and 9 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-63495, was published on 20 August 2026. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 9
- Critical, all time
- 0
- Exploited in the wild
- 0
Libevent technologies
- Libevent10
Latest Libevent vulnerabilities
- CVE-2026-63495: Libevent WebSocket unbounded memory accumulation via frame fragmentationhighCVSS 7.5EPSS 0.6%
- CVE-2026-63388: Libevent heap out-of-bounds write in bufferevent_sockhighCVSS 8.4EPSS 0.2%
- CVE-2026-63387: Libevent off-by-one stack buffer overflow in DNS response parsinghighCVSS 7EPSS 0.4%
- CVE-2026-63384: Libevent integer overflow in evtag_unmarshal_headerinfoCVSS 7.5EPSS 0.5%
- CVE-2026-63383: Libevent out-of-bounds read in event_tagginginfoEPSS 0.5%
- CVE-2026-63382: Libevent HTTP request smuggling via inconsistent Transfer-Encoding parsinginfoEPSS 0.8%
- CVE-2026-63381: Libevent use-after-free in evbuffer_add_buffer_referenceinfoEPSS 0.2%
- CVE-2026-63380: Libevent null pointer dereference in evws_new_session error pathinfoCVSS 0EPSS 0.1%
- CVE-2026-63379: Libevent HTTP chunked trailer header smugglinginfoCVSS 0EPSS 0.7%
Most severe Libevent vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-63388: Libevent heap out-of-bounds write in bufferevent_sockhighCVSS 8.4EPSS 0.2%
- CVE-2026-63495: Libevent WebSocket unbounded memory accumulation via frame fragmentationhighCVSS 7.5EPSS 0.6%
- CVE-2026-63387: Libevent off-by-one stack buffer overflow in DNS response parsinghighCVSS 7EPSS 0.4%
- CVE-2026-63384: Libevent integer overflow in evtag_unmarshal_headerinfoCVSS 7.5EPSS 0.5%
- CVE-2026-63379: Libevent HTTP chunked trailer header smugglinginfoCVSS 0EPSS 0.7%
- CVE-2026-63380: Libevent null pointer dereference in evws_new_session error pathinfoCVSS 0EPSS 0.1%
- CVE-2026-63382: Libevent HTTP request smuggling via inconsistent Transfer-Encoding parsinginfoEPSS 0.8%
- CVE-2026-63383: Libevent out-of-bounds read in event_tagginginfoEPSS 0.5%
- CVE-2026-63381: Libevent use-after-free in evbuffer_add_buffer_referenceinfoEPSS 0.2%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 9 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/libevent.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Libevent vulnerabilities", https://junglewise.ai/threats/vendors/libevent, 26 September 2026.