CVE-2026-63379ModerateRevised 25 Aug
Libevent: HTTP Header smuggling
Assessment
- Severity
- Moderate
- CVSS base score
- Not published
- Impact
- Not stated
- EPSS, next 30 days
- Not scored yet
- Public exploit code
- No Nuclei template lists it
- Exploitability
- Not assessed
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Mariner
- Weakness
- CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
- Issued by
- GitHub_M
- Published
- 22 Aug 2026 · August 2026
- Last revised
- 25 Aug 2026Information published.
Updates that fix it
0 KBsNo KB listed
MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.
Affected products
5 affected products
- azl3 fluent-bit 3.1.10-6 on Azure Linux 3.0
- azl3 libevent 2.1.12-1 on Azure Linux 3.0
- azl3 lldpd 1.0.22-1 on Azure Linux 3.0
- azl3 mysql 8.0.46-1 on Azure Linux 3.0
- azl3 ntp 4.2.8p17-2 on Azure Linux 3.0
What changed
First observed 14 Oct 2026- 14 Oct 2026 Source coverage: msrc-cvrfIncomplete → Current
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