CVE-2019-12526
CRITICAL9.8EPSS 39.2%squid3 - security update
Published: 11/26/2019Modified: 4/28/2026
Description
An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap.
Affected packages (2)
- Debian/squidfrom 0, < 4.9-1
- Debian/squid3from 0, < 3.4.8-6+deb8u9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |