Updated: 2026-02-27 00:16:01.67174
Description:
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | MEDIUM | 5.0 |
| CVSS Version 3.x | HIGH | 7.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| CloudLinux 7 ELS | squid | 3.5.20 | 7.5 | HIGH | Released | CLSA-2024:1733909428 | 2024-12-25 23:21:38 | |
| Debian 10 ELS | squid | 4.6.0 | 7.5 | HIGH | Already Fixed | 2025-10-15 20:15:18 | ||
| Oracle Linux 6 ELS | squid | 3.1.23 | 7.5 | HIGH | Released | CLSA-2021:1634925537 | 2021-12-09 07:57:08 | |
| Oracle Linux 6 ELS | squid34 | 3.4.14 | 7.5 | HIGH | Released | CLSA-2021:1634925634 | 2021-12-09 07:57:08 | |
| Oracle Linux 7 ELS | squid | 3.5.20 | 7.5 | HIGH | Already Fixed | 2024-12-10 16:21:56 | ||
| RHEL 7 ELS | squid | 3.5.20 | 7.5 | HIGH | Released | CLSA-2025:1757698482 | 2025-09-12 19:25:25 | |
| Ubuntu 16.04 ELS | squid | 3.5.12-1 | 7.5 | HIGH | Released | CLSA-2021:1635459285 | 2021-12-09 07:57:08 | |
| Ubuntu 18.04 ELS | squid | 3.5.27-1 | 7.5 | HIGH | Already Fixed | 2023-06-22 17:07:10 | ||
| Ubuntu 20.04 ELS | squid | 4.10 | 7.5 | HIGH | Already Fixed | 2025-09-11 21:27:10 |