CVE-2025-67125

A signed integer overflow in docopt.cpp v0.6.2 (LeafPattern::match in docoptprivate.h) when merging occurrence counters (e.g., default LONGMAX + first user "-v/--verbose") can cause counter wrap (negative/unbounded semantics) and lead to logic/policy bypass in applications that rely on occurrence-based limits, rate-gating, or safety toggles. In hardened builds (e.g., UBSan or -ftrapv), the overflow may also result in process abort (DoS).

References

Affected packages

Git / github.com/docopt/docopt.cpp

Affected ranges

Type

GIT

Repo

https://github.com/docopt/docopt.cpp

Events

Introduced

Last affected

18110222dc9cb57ec880ce24fbbd7291b2d1046e

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.6.2"
        }
    ]
}

Affected versions

v0.*

v0.6.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-67125.json"