Linux · 
Amazon Linux · Security advisory · July 20, 2026
Amazon Linux · Security advisory · July 20, 2026ALAS2023-2026-1963: Security update for 10 packages
ALAS2023-2026-1963, released July 20, 2026, fixes 5 CVEs across 10 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
5
None rated Critical
Exploited
0
None reported
Highest CVSS
8.2
Base score, 0 to 10
Highest EPSS
0.0075
55th percentile
Priority of the 5 CVEs
Patch now 0
Urgent 0
High 3
Routine 2
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| python-unversioned-command | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3 | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3-debug | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3-devel | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3-idle | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3-libs | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3-test | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3-tkinter | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3.9-debuginfo | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
| python3.9-debugsource | amzn 2023 | 3.9.25-1.amzn2023.0.8 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-11940 | tarfile extraction filter bypass allows escaping the destination directory | 7.8 | 0.0075 | None reported |
| High | CVE-2026-11972 | tarfile opened in streaming mode mishandles EOF | 8.2 | 0.0072 | None reported |
| High | CVE-2026-9669 | bz2.BZ2Decompressor reuse after error can cause a stack buffer overflow | 8.2 | 0.0043 | None reported |
| Routine | CVE-2026-3276 | Potential DoS via quadratic complexity in unicodedata.normalize() | 6.3 | 0.0049 | None reported |
| Routine | CVE-2026-0864 | Configuration Injection via Carriage Return (\r) in write() method | 5.5 | 0.0013 | None reported |
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