Linux · 
Red Hat · Security advisory · March 12, 2026
Red Hat · Security advisory · March 12, 2026RHSA-2026:4463: Security update for 8 packages
RHSA-2026:4463, released March 12, 2026, fixes 4 CVEs across 8 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
4
None rated Critical
Exploited
0
None reported
Highest CVSS
8.1
Base score, 0 to 10
Highest EPSS
0.0057
47th percentile
Priority of the 4 CVEs
Patch now 0
Urgent 0
High 4
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| python3.12 | RHEL 8 | 0:3.12.12-3.el8_10 |
| python3.12-debug | RHEL 8 | 0:3.12.12-3.el8_10 |
| python3.12-devel | RHEL 8 | 0:3.12.12-3.el8_10 |
| python3.12-idle | RHEL 8 | 0:3.12.12-3.el8_10 |
| python3.12-libs | RHEL 8 | 0:3.12.12-3.el8_10 |
| python3.12-rpm-macros | RHEL 8 | 0:3.12.12-3.el8_10 |
| python3.12-test | RHEL 8 | 0:3.12.12-3.el8_10 |
| python3.12-tkinter | RHEL 8 | 0:3.12.12-3.el8_10 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-1299 | email BytesGenerator header injection due to unquoted newlines | 7.1 | 0.0057 | None reported |
| High | CVE-2026-0865 | wsgiref.headers.Headers allows header newline injection | 8.1 | 0.0055 | None reported |
| High | CVE-2025-15366 | IMAP command injection in user-controlled commands | 7.1 | 0.0043 | None reported |
| High | CVE-2025-15367 | POP3 command injection in user-controlled commands | 7.1 | 0.0038 | None reported |
Showing 1 to 4 of 4
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