CVE-2026-55406

Buffa is a pure-Rust Protocol Buffers implementation with first-class protobuf editions support. Prior to 0.7.0, a soundness bug in the OwnedView<V> type allowed safe Rust code to trigger a use-after-free: the OwnedView::decode constructor transmuted a borrowed slice to &'static [u8], and the Deref implementation exposed the promoted 'static lifetime on borrowed view fields (such as &'static str and &'static [u8]) to callers, so the borrow checker permitted those references to outlive the OwnedView; once the OwnedView was dropped and its backing buffer freed, the references became dangling, enabling memory corruption, information disclosure of freed heap contents, and cross-thread misuse without any unsafe code in the calling application. This issue is fixed in version 0.7.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/anthropics/buffa/commit/7dcf50a1a40eca6ed8d6c6dd59f4310aa0d68b0e
https://github.com/anthropics/buffa/pull/154
https://github.com/anthropics/buffa/releases/tag/v0.7.0
https://github.com/anthropics/buffa/security/advisories/GHSA-9pwq-gcrx-wghh

Configurations

No configuration.

History

16 Jul 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-16 17:16

Updated : 2026-07-16 17:36

NVD link : CVE-2026-55406

Mitre link : CVE-2026-55406

CVE.ORG link : CVE-2026-55406

JSON object : View

Products Affected

No product.

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-416

Use After Free

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