Linux · 
Ubuntu · Package update · April 29, 2026
Ubuntu · Package update · April 29, 2026libcurl4t64 8.18.0-1ubuntu2.1: libcurl4t64 8.18.0-1ubuntu2.1 for Ubuntu 26.04.1 LTS (resolute)
libcurl4t64 8.18.0-1ubuntu2.1, released April 29, 2026, fixes 7 CVEs in libcurl4t64. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
7
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0072
54th percentile
Priority of the 7 CVEs
Patch now 0
Urgent 0
High 2
Routine 5
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libcurl4t64 | Ubuntu 26.04.1 LTS (resolute) | 8.18.0-1ubuntu2.1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-5773 | wrong reuse of SMB connection | 7.5 | 0.0062 | None reported |
| High | CVE-2026-6276 | stale custom cookie host causes cookie leak | 7.5 | 0.0030 | None reported |
| Routine | CVE-2026-6253 | proxy credentials leak over redirect-to proxy | 6.5 | 0.0072 | None reported |
| Routine | CVE-2026-6429 | netrc credential leak with reused proxy connection | 6.5 | 0.0052 | None reported |
| Routine | CVE-2026-7168 | cross-proxy Digest auth state leak | 6.5 | 0.0047 | None reported |
| Routine | CVE-2026-5545 | wrong reuse of HTTP Negotiate connection | 6.5 | 0.0041 | None reported |
| Routine | CVE-2026-4873 | connection reuse ignores TLS requirement | 5.9 | 0.0033 | None reported |
Showing 1 to 7 of 7
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