CVE-2026-71261
HIGHCVE-2026-71261 is a high-severity (CVSS 7.8) CWE-190 vulnerability. O3 Security confirms whether CVE-2026-71261 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
dr_libs dr_wav.h (all versions through current master) contains an integer overflow in W64 CUE chunk metadata parsing. In drwav__metadata_process_chunk(), a stage-1 capacity estimate…
Description
dr_libs dr_wav.h (all versions through current master) contains an integer overflow in W64 CUE chunk metadata parsing. In drwav__metadata_process_chunk(), a stage-1 capacity estimate truncates the 64-bit W64 chunk sizeInBytes to size_t before dividing by DRWAV_CUE_POINT_BYTES; on 32-bit builds this truncation causes the pre-allocated extra metadata capacity to be computed incorrectly. The subsequent read in drwav__read_cue_to_metadata_obj() computes the actual cue point count and allocation size using the full-precision, attacker-controlled cuePointCount field without cross-checking it against the stage-1 capacity estimate, and the only bounds enforcement on the resulting memory region (drwav__metadata_get_memory()) is a DRWAV_ASSERT, which compiles to a no-op under -DNDEBUG (the default for release builds). A crafted W64 WAV file can therefore cause a heap buffer overflow in any 32-bit application parsing untrusted WAV metadata.
Detection & mitigation playbook
VulnerabilityDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for the affected component. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Remediation status
No patched version of the affected component has shipped for CVE-2026-71261 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2026-71261 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2026-71261. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-71261 in your dependencies?
O3 detects CVE-2026-71261 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.