Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vinyl-Cache | Vinyl Cache | unaffected |
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| Varnish-Software | Varnish Cache | unaffected |
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No data available yet.
Vendor Solution
Update to unaffected Version
Vendor Workaround
replace the .upper() and .lower() VCL type method calls by their respective vmod_std counterparts: std.toupper() and std.tolower().
Tracking
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No advisories yet.
| Link | Providers |
|---|---|
| https://vinyl-cache.org/security/VSV00020.html |
|
Fri, 18 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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.). | |
| Weaknesses | CWE-787 | |
| References |
| |
| Metrics |
cvssV4_0
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Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-09-18T20:30:04.646Z
Reserved: 2026-09-18T20:30:04.310Z
Link: CVE-2026-93894
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-18T21:18:49.297
Modified: 2026-09-18T21:18:49.297
Link: CVE-2026-93894
Redhat
No data.
OpenCVE Enrichment
No data.
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CWE-787
Out-of-bounds Write