v1.87.1.0 fix: update vulnerable sharp and adm-zip overrides (#2873)

* fix(deps): update vulnerable sharp and adm-zip overrides

* docs: format security dependency release summary

* docs: update project documentation for v1.87.1.0

---------

Co-authored-by: garrytan <19957+garrytan@users.noreply.github.com>

CHANGELOG.md

@@ -1,5 +1,34 @@
 # Changelog
 
+## [1.87.1.0] - 2026-09-15
+
+**Two vulnerable dependencies are fixed.**
+**Archive extraction keeps its boundary.**
+
+Sharp now resolves to 0.35.4, replacing the vulnerable libheif bundle, and adm-zip resolves to 0.6.1, which rejects extraction through destination symlinks. Both packages arrive through transitive dependencies, so the override changes also update the resolved lockfile and Sharp's platform packages. A normal archive still extracts, and the screenshot downscaler still reads and resizes PNGs. The fix does not change the pinned evaluation harness or add a vulnerability exception. This takes the dependency update from #2867 without bundling its separate override-expiry and scheduled-notification proposals into the security patch.
+
+### The three numbers that matter
+
+These results come from OSV-Scanner 2.3.8 with the existing `.osv-scanner.toml`, and `bun test test/dependency-security.test.ts` against the original and updated lockfiles.
+
+| Check | Before | After | Δ |
+|---|---:|---:|---:|
+| Unsuppressed OSV findings | 2 | 0 | -2 |
+| Security regression checks passing | 1/6 | 6/6 | +5 |
+| Destination-symlink escape cases rejected | 0/2 | 2/2 | +2 |
+
+The two escape cases cover a symlinked file and a symlinked directory. Both now refuse the write and leave the file outside the extraction directory unchanged. The scanner's existing exceptions remain in place; zero unsuppressed findings is not a claim that every dependency is vulnerability-free.
+
+### What this means for users
+
+The installed dependency tree no longer carries these two known-vulnerable versions. The screenshot path continues to handle PNGs, while archive extraction gains the upstream boundary check without a new configuration switch. Upgrade, then run `bun install --frozen-lockfile` to install the fixed dependency set.
+
+### Itemized changes
+
+#### Security
+- Upgrade the `sharp` override to 0.35.4 and `adm-zip` to 0.6.1, including the resolved Sharp platform packages. Addresses #2866. Contributed by @smsmatt in #2867.
+- Add regression coverage for fixed version floors, the loaded Sharp runtime, ordinary archive extraction, and file/directory destination symlink rejection.
+
 ## [1.87.0.0] - 2026-09-11
 
 **`/cso` now distinguishes verified vulnerabilities from hypotheses and coverage gaps, and qualified comprehensive audits can produce replayable repair bundles without changing your working branch.**

CONTRIBUTING.md

@@ -212,6 +212,7 @@ eval files, and misses the strict classifier. No API keys needed.
 - **Tier-alignment invariant** (`test/e2e-tier-alignment.test.ts`) — For every self-gated `test/skill-e2e-*.test.ts` named in a touchfiles dep list, the file's `EVALS_TIER` self-gate must match its declared tier in `E2E_TIERS`. Kills the "inert demotion" class where a test is re-tiered in `touchfiles.ts` but the file still gates on the old tier and keeps running in the wrong lane. Unmapped or mixed-tier files are reported, never silently skipped.
 - **Catalog budget** (`test/catalog-budget.test.ts`) — Caps the aggregate discovery surface: the sum of every skill's frontmatter `name` + `description` (what every host loads at discovery, every session) must stay under 1,150 token-equivalents, with a 260-byte per-skill cap. Counting goes through the shared census in `test/helpers/skill-census.ts` (physical files vs authored skills vs registry entries — three deliberately different counts). Adding a skill? The failure message carries the re-measure + ratchet protocol.
 - **Context-budget ratchet** (`test/context-budget-ratchet.test.ts`) — CI ceilings on the two token ledgers the catalog budget doesn't cover: the always-on full-frontmatter aggregate and each skill's per-invocation eager tokens (SKILL.md + forced-read references), graded against `test/fixtures/context-budget.json` via `lib/context-bill.ts`. New skills fail until they have a ceiling; ceilings for removed skills must be pruned. Legitimate growth or a landed reduction: re-run `bun test/helpers/capture-context-budget.ts` and commit the refreshed fixture in the same commit, so the change is a visible decision in the diff.
+- **Dependency security regressions** (`test/dependency-security.test.ts`) — Run `bun test test/dependency-security.test.ts` to check the resolved `sharp` and `adm-zip` version floors, load Sharp, verify ordinary ZIP extraction, and reject extraction through destination-file and destination-directory symlinks. The symlink cases skip Windows. These checks complement the OSV scan; they do not change its existing exceptions.
 
 ### Tier 2: E2E via `claude -p` (~$4.20/run)
 

VERSION

@@ -1 +1 @@
-1.87.0.0
+1.87.1.0

agents-digest/gstack-AGENTS.md

@@ -1,4 +1,4 @@
-# gstack digest v1.87.0.0 — regenerate/re-copy after upgrading gstack
+# gstack digest v1.87.1.0 — regenerate/re-copy after upgrading gstack
 
 Behavioral rules from gstack (https://github.com/garrytan/gstack), compressed
 for agent hosts without a full skill install. The full skills add workflows,

bun.lock

@@ -26,9 +26,9 @@
     "playwright-core@1.62.1": "patches/playwright-core@1.62.1.patch",
   },
   "overrides": {
-    "adm-zip": "^0.6.0",
+    "adm-zip": "^0.6.1",
     "ip-address": "10.3.1",
-    "sharp": "0.35.0",
+    "sharp": "0.35.4",
   },
   "packages": {
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@@ -65,57 +65,57 @@
 
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-    "@img/sharp-wasm32": ["@img/sharp-wasm32@0.35.0", "", { "dependencies": { "@emnapi/runtime": "^1.11.0" } }, "sha512-9woLIFORERCr+6cWu87dQ22J34EExkhc73U1kZW0c+RclQqWetoodByp4dWZ/hN8/KVmTRAx2HOnUwib8AwZdA=="],
+    "@img/sharp-wasm32": ["@img/sharp-wasm32@0.35.4", "", { "dependencies": { "@emnapi/runtime": "^1.11.3" } }, "sha512-zQnl4Kwp7Q6NHsENtU2T/00Zi+w3AQNwz3+UaTyVBy2FpXrzXzGjndpK61onhZjRtRpQXxCTeqw19bVyXOh7jA=="],
 
-    "@img/sharp-webcontainers-wasm32": ["@img/sharp-webcontainers-wasm32@0.35.0", "", { "dependencies": { "@img/sharp-wasm32": "0.35.0" }, "cpu": "none" }, "sha512-t+kie1TOyaDM6Dho+f+y0VqIUNhYQaKCUahuZVi0E0frgdiaOaPsDxDW3wfKacUdaNBCnK/ZDBMg33ydvHj8uA=="],
+    "@img/sharp-webcontainers-wasm32": ["@img/sharp-webcontainers-wasm32@0.35.4", "", { "dependencies": { "@img/sharp-wasm32": "0.35.4" }, "cpu": "none" }, "sha512-ESfNkywmCfPNyaZjxooddJQiQ+l/nTpGEOGthxiLnIHXC/CmcBixnfwUleX9mCz9ovrUUvKMap/pm8RYbzfwaA=="],
 
-    "@img/sharp-win32-arm64": ["@img/sharp-win32-arm64@0.35.0", "", { "os": "win32", "cpu": "arm64" }, "sha512-M5eKxug0dabbaWgFKvPa3odNs2OpaP+81NASfGKkt4GcYXpNhSu7CaeYxWkLNV6vHmUp4hnCxnxrUyhUJhXbKA=="],
+    "@img/sharp-win32-arm64": ["@img/sharp-win32-arm64@0.35.4", "", { "os": "win32", "cpu": "arm64" }, "sha512-iNdlBX9gLVvqe2I3uIJSIKTq6wckP/DYxZtcqxm09x5Gi24DnFBmPAWZmr60ZyYMG0xlzo6goG3670ar+RXvRw=="],
 
-    "@img/sharp-win32-ia32": ["@img/sharp-win32-ia32@0.35.0", "", { "os": "win32", "cpu": "ia32" }, "sha512-z0+pZ03QCDvdVN0Ez9IX/yjWC19ikMlXrmdYMwYNLTh2BLPx3hXWPvyqWfquZ0BTO9O6GVOjIVoTcyyacMnWlQ=="],
+    "@img/sharp-win32-ia32": ["@img/sharp-win32-ia32@0.35.4", "", { "os": "win32", "cpu": "ia32" }, "sha512-kqRsbaa5CS6KHlpxnN7WhE6vAAugXyZButpRdvDWetlv6Qv4N9WTcrWzF7tXfB9T7MsoadqdI8hmwLq6UlLvtw=="],
 
-    "@img/sharp-win32-x64": ["@img/sharp-win32-x64@0.35.0", "", { "os": "win32", "cpu": "x64" }, "sha512-feNnlz5ZHKr0MY1LPHvZQyJeBkbo4ctsn0D8FvA53VTw5TC63rfEL2UrWbkSBR19htSE7Mw78xYVwdJqoMWVHw=="],
+    "@img/sharp-win32-x64": ["@img/sharp-win32-x64@0.35.4", "", { "os": "win32", "cpu": "x64" }, "sha512-XtmnYhBcrORsJ4XJngyzr/EWP0hRZLAZRFaApdKuviyqF78+ylxh2y06ZmtULAMOnObJ3ucpN0AcwSWnMowTRg=="],
 
     "@modelcontextprotocol/sdk": ["@modelcontextprotocol/sdk@1.30.0", "", { "dependencies": { "@hono/node-server": "^1.19.9 || ^2.0.5", "ajv": "^8.17.1", "ajv-formats": "^3.0.1", "content-type": "^1.0.5", "cors": "^2.8.5", "cross-spawn": "^7.0.5", "eventsource": "^3.0.2", "eventsource-parser": "^3.0.0", "express": "^5.2.1", "express-rate-limit": "^8.2.1", "hono": "^4.11.4", "jose": "^6.1.3", "json-schema-typed": "^8.0.2", "pkce-challenge": "^5.0.0", "raw-body": "^3.0.0", "zod": "^3.25 || ^4.0", "zod-to-json-schema": "^3.25.1" }, "peerDependencies": { "@cfworker/json-schema": "^4.1.1" }, "optionalPeers": ["@cfworker/json-schema"] }, "sha512-xKd8OIzlqNzcqcNumGAa6g+PW2kjD5vrpcKOnfldAUPP3j7lnqMPwlTXQm8gF+UwH72z0lqaRbjr9hqGz0eITA=="],
 
@@ -177,7 +177,7 @@
 
     "accepts": ["accepts@2.0.0", "", { "dependencies": { "mime-types": "^3.0.0", "negotiator": "^1.0.0" } }, "sha512-5cvg6CtKwfgdmVqY1WIiXKc3Q1bkRqGLi+2W/6ao+6Y7gu/RCwRuAhGEzh5B4KlszSuTLgZYuqFqo5bImjNKng=="],
 
-    "adm-zip": ["adm-zip@0.6.0", "", {}, "sha512-XleryMhbuksdKtofnWZ9Sk+4CUTbms4Mb/EU32SZwToAyZ5RgVos/ki8n+yr0LWHOGKuakbXTuuYNHLQjhddgg=="],
+    "adm-zip": ["adm-zip@0.6.1", "", {}, "sha512-Xwrja8nx9e5o2N1my4DsKCeKpdrnACyr1wtbPxBDgGzKzKyE9kRtBFA8mWldI+RVlD7CBZNWY/wQ2+ydwOR6kQ=="],
 
     "ajv": ["ajv@8.20.0", "", { "dependencies": { "fast-deep-equal": "^3.1.3", "fast-uri": "^3.0.1", "json-schema-traverse": "^1.0.0", "require-from-string": "^2.0.2" } }, "sha512-Thbli+OlOj+iMPYFBVBfJ3OmCAnaSyNn4M1vz9T6Gka5Jt9ba/HIR56joy65tY6kx/FCF5VXNB819Y7/GUrBGA=="],
 
@@ -471,7 +471,7 @@
 
     "setprototypeof": ["setprototypeof@1.2.0", "", {}, "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="],
 
-    "sharp": ["sharp@0.35.0", "", { "dependencies": { "@img/colour": "^1.1.0", "detect-libc": "^2.1.2", "semver": "^7.8.4" }, "optionalDependencies": { "@img/sharp-darwin-arm64": "0.35.0", "@img/sharp-darwin-x64": "0.35.0", "@img/sharp-freebsd-wasm32": "0.35.0", "@img/sharp-libvips-darwin-arm64": "1.3.0", "@img/sharp-libvips-darwin-x64": "1.3.0", "@img/sharp-libvips-linux-arm": "1.3.0", "@img/sharp-libvips-linux-arm64": "1.3.0", "@img/sharp-libvips-linux-ppc64": "1.3.0", "@img/sharp-libvips-linux-riscv64": "1.3.0", "@img/sharp-libvips-linux-s390x": "1.3.0", "@img/sharp-libvips-linux-x64": "1.3.0", "@img/sharp-libvips-linuxmusl-arm64": "1.3.0", "@img/sharp-libvips-linuxmusl-x64": "1.3.0", "@img/sharp-linux-arm": "0.35.0", "@img/sharp-linux-arm64": "0.35.0", "@img/sharp-linux-ppc64": "0.35.0", "@img/sharp-linux-riscv64": "0.35.0", "@img/sharp-linux-s390x": "0.35.0", "@img/sharp-linux-x64": "0.35.0", "@img/sharp-linuxmusl-arm64": "0.35.0", "@img/sharp-linuxmusl-x64": "0.35.0", "@img/sharp-webcontainers-wasm32": "0.35.0", "@img/sharp-win32-arm64": "0.35.0", "@img/sharp-win32-ia32": "0.35.0", "@img/sharp-win32-x64": "0.35.0" } }, "sha512-BqvG5XbwPZ4NV0DK90d86leEECMsoa8bO0nqnKWlBDYxri4GJ7c4EDInaF6q20lTh/mATmnDIKWJFfXnoVfH5g=="],
+    "sharp": ["sharp@0.35.4", "", { "dependencies": { "@img/colour": "^1.1.0", "detect-libc": "^2.1.2", "semver": "^7.8.5" }, "optionalDependencies": { "@img/sharp-darwin-arm64": "0.35.4", "@img/sharp-darwin-x64": "0.35.4", "@img/sharp-freebsd-wasm32": "0.35.4", "@img/sharp-libvips-darwin-arm64": "1.3.3", "@img/sharp-libvips-darwin-x64": "1.3.3", "@img/sharp-libvips-linux-arm": "1.3.3", "@img/sharp-libvips-linux-arm64": "1.3.3", "@img/sharp-libvips-linux-ppc64": "1.3.3", "@img/sharp-libvips-linux-riscv64": "1.3.3", "@img/sharp-libvips-linux-s390x": "1.3.3", "@img/sharp-libvips-linux-x64": "1.3.3", "@img/sharp-libvips-linuxmusl-arm64": "1.3.3", "@img/sharp-libvips-linuxmusl-x64": "1.3.3", "@img/sharp-linux-arm": "0.35.4", "@img/sharp-linux-arm64": "0.35.4", "@img/sharp-linux-ppc64": "0.35.4", "@img/sharp-linux-riscv64": "0.35.4", "@img/sharp-linux-s390x": "0.35.4", "@img/sharp-linux-x64": "0.35.4", "@img/sharp-linuxmusl-arm64": "0.35.4", "@img/sharp-linuxmusl-x64": "0.35.4", "@img/sharp-webcontainers-wasm32": "0.35.4", "@img/sharp-win32-arm64": "0.35.4", "@img/sharp-win32-ia32": "0.35.4", "@img/sharp-win32-x64": "0.35.4" }, "peerDependencies": { "@types/node": "*" }, "optionalPeers": ["@types/node"] }, "sha512-n++8XWcj+jCOr2IOl7h8LbKnGBDY4aPbmprMONBNFdn0ImXqpGVv5zliDs0V9HbmbCQLpbuo2ej9rAoOQTvMDA=="],
 
     "shebang-command": ["shebang-command@2.0.0", "", { "dependencies": { "shebang-regex": "^3.0.0" } }, "sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA=="],
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gstack",
-  "version": "1.87.0",
+  "version": "1.87.1",
   "description": "Garry's Stack — Claude Code skills + fast headless browser. One repo, one install, entire AI engineering workflow.",
   "license": "MIT",
   "type": "module",
@@ -86,9 +86,9 @@
     "xterm-addon-fit": "^0.8.0"
   },
   "overrides": {
-    "adm-zip": "^0.6.0",
+    "adm-zip": "^0.6.1",
     "ip-address": "10.3.1",
-    "sharp": "0.35.0"
+    "sharp": "0.35.4"
   },
   "patchedDependencies": {
     "playwright-core@1.62.1": "patches/playwright-core@1.62.1.patch"

test/dependency-security.test.ts

@@ -0,0 +1,56 @@
+import { describe, expect, test } from "bun:test";
+import { mkdtempSync, mkdirSync, readFileSync, rmSync, symlinkSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import AdmZip from "adm-zip";
+import sharp from "sharp";
+
+describe("security dependency overrides", () => {
+  for (const [name, minimum] of [["sharp", "0.35.4"], ["adm-zip", "0.6.1"]]) {
+    test(`${name} resolves only versions at or above ${minimum}`, async () => {
+      const lock = await Bun.file(join(import.meta.dir, "../bun.lock")).text();
+      const versions = [...lock.matchAll(new RegExp(`"${name}@([^"]+)"`, "g"))];
+      expect(versions.length).toBeGreaterThan(0);
+      for (const match of versions) {
+        expect(Bun.semver.satisfies(match[1], `>=${minimum}`)).toBe(true);
+      }
+    });
+  }
+
+  test("sharp loads the patched runtime", () => {
+    expect(Bun.semver.satisfies(sharp.versions.sharp, ">=0.35.4")).toBe(true);
+  });
+
+  test("adm-zip still extracts ordinary archives", () => {
+    const root = mkdtempSync(join(tmpdir(), "gstack-zip-safe-"));
+    try {
+      const zip = new AdmZip();
+      zip.addFile("nested/file.txt", Buffer.from("archive contents"));
+      zip.extractAllTo(root, true);
+      expect(readFileSync(join(root, "nested/file.txt"), "utf8")).toBe("archive contents");
+    } finally {
+      rmSync(root, { recursive: true, force: true });
+    }
+  });
+
+  for (const target of ["directory", "file"] as const) {
+    test.skipIf(process.platform === "win32")(`adm-zip refuses an extraction through a ${target} symlink`, () => {
+      const root = mkdtempSync(join(tmpdir(), "gstack-zip-symlink-"));
+      try {
+        const destination = join(root, "destination");
+        const outside = join(root, "outside");
+        mkdirSync(destination);
+        mkdirSync(outside);
+        const protectedFile = join(outside, "file.txt");
+        writeFileSync(protectedFile, "original contents");
+        symlinkSync(target === "directory" ? outside : protectedFile, join(destination, "link"));
+        const zip = new AdmZip();
+        zip.addFile(target === "directory" ? "link/file.txt" : "link", Buffer.from("overwritten"));
+        expect(() => zip.extractAllTo(destination, true)).toThrow();
+        expect(readFileSync(protectedFile, "utf8")).toBe("original contents");
+      } finally {
+        rmSync(root, { recursive: true, force: true });
+      }
+    });
+  }
+});