CVE-2026-93894
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In Vinyl Cache before 9.0,2, workspace buffer overflow vulnerability was found in the .upper() and .lower() string type methods of VCL. This can be used as a remote denial of service (DoS) vector to make the child process segfault or assert, and then restart. Effectively exploiting this vulnerability requires prior knowledge about the VCL in use and the ability to craft a request that contains a string that is long enough to fill the remaining workspace at the call site while staying under the different request size limits (http_req_size, http_req_hdr_len, etc.).
| CWE | CWE-787 |
| Vendor | vinyl-cache |
| Product | vinyl cache |
| Published | Sep 18, 2026 |
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Affected Versions
Vinyl-Cache / Vinyl Cache
0 < 9.0.2 0 < 90f5bacc14b2404e6cc349ba015f0f73b8515136
Varnish-Software / Varnish Cache
9.0.0 < 9.0.4 0 < c5078ae575201b05ae8674a90ddb19ffe7f4b439 6.3.0 ≤ 8.0.2