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CVE PROGRAM SOURCE RECORD2.3 Low

CVE-2026-93894

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 servi

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Status
Published
Published
Updated
Assigning organization
mitre

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.).

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Vinyl-Cache Vinyl Cache

Default version status: unaffected

  • 0 to < 9.0.2affected
  • 0 to < 90f5bacc14b2404e6cc349ba015f0f73b8515136affected

Varnish-Software Varnish Cache

Default version status: unaffected

  • 9.0.0 to < 9.0.4affected
  • 0 to < c5078ae575201b05ae8674a90ddb19ffe7f4b439affected
  • 6.3.0 to ≤ 8.0.2affected

References