Read 2026-10-04
google/guava: technical due diligence, read from its repository
What Borehole read in google/guava's code and history at 4d41665: its licence, security advisories, releases, review practice, tests, dependencies and operations. Every finding cites the file and line it rests on. The full report also covers the team and asks the questions the code cannot answer.
| Dimension | Rating |
|---|---|
| Architecture & Codebase — including AI provenance | strong |
| Engineering Process & SDLC Maturity | strong |
| Product & Engineering Maturity | strong |
| Security & Reliability Posture | strong |
| Observability & Operations | not assessable |
| Fit with the Acquirer | not assessable |
What the repository says
CONTRIBUTING.md:8: This repository is a mirror; development happens elsewhere- Releases are cut from another branch than the one surveyed
README.md:5: names OpenSSF
Architecture & Codebase — including AI provenance
strongguava/src/com/google/common/cache/LocalCache.java is 4,997 lines, 40× this codebase's median file
adequateThe median source file here is 123 lines. 40 files exceed 1,230 lines, the largest being 4,997. Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down.
guava/src/com/google/common/cache/LocalCache.java:1 — 4,997 lines (40× median) |
android/guava/src/com/google/common/cache/LocalCache.java:1 — 4,824 lines (39× median) |
guava/src/com/google/common/collect/Maps.java:1 — 4,437 lines (36× median) |
android/guava/src/com/google/common/collect/Maps.java:1 — 4,235 lines (34× median) |
android/guava/src/com/google/common/collect/MapMakerInternalMap.java:1 — 2,919 lines (23× median) |
Engineering Process & SDLC Maturity
strongNo finding.
Product & Engineering Maturity
strongReleases are cut from another branch than the one surveyed
adequateThe newest release, v33.7.2, is not on the branch this survey read; the newest release on it is v7.0. The shipped product may differ from what this report describes. Survey the release branch too.
| tag v33.7.2 |
Security & Reliability Posture
strong1 advisory against this project in the last 24 months
adequateThe newest was published on 2026-09-29. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. Whether 1 of them are fixed in the code you ship could not be told from this history: its version is only known to be at least 7.0.0. Answer lives in: the release you run, set against each fixed version.
| 2026-09-29: GHSA-xxph-c9ww-hj94 (moderate), fixed in 33.7.2: CompactHashMap/CompactHashSet/MapMakerInternalMap deserialization triggers uncontrolled memory allocation |
Observability & Operations
not assessableNot rated: only 5 of 16 checks could reach a conclusion here; the rest do not apply to this repository or could not read it.
Fit with the Acquirer
not assessableNot rated: structurally not assessable from a repository.
Read more, or read your own
The full report on google/guava: every dimension, the questions for the room, and the audit log.
Survey a repository: free on public repositories. Private code is read on your own machine by a collector whose source you can read first.