CVE-2024-5218Discovered Published
Reviews & Rating XSS via upload
View patch bundle on GitHubFull published report
The reviewed summary below describes the scope of the fixture testing.
Reviews & Rating XSS via upload (CVE-2024-5218)
cve.now entry. Product: Reviews & Rating
WordPress plugin (lab: gabriel-reviewsx-app).
Eden terminates the HTTP connection to the affected product, evaluates a declarative policy and — in tier 2 — a separately compiled native Rust module under signed module authority, before any byte reaches the application. It does not patch the affected component; the vendor's fixed release remains the durable repair.
Status: Remediated (tier 1 + tier 2), live-proven 2026-11-11T16:47:31Z on the
installed eden-product-release:1.103.0 lab container.
The vulnerability
The Reviews & Rating uploader stores a caller-supplied filename unescaped,
persisting script tags. The fixture (make_reviewsx) reproduces the shape: an
upload whose filename carries <script>alert(1)</script> records a
stored-XSS mark.
The Eden patch
Tier 1 — declarative policy (blunt, fail-closed): deny every request under
/wp-admin/admin-ajax.php, ordinary review uploads included — false positives
measured below.
Tier 2 — native Rust module gabriel_reviewsx_v1 (surgical): refuses
upload bodies carrying script-opening tags (<script); ordinary filenames
(notes.txt) pass unchanged.
Measured comparison (fixtures9, run 2026-11-11)
| Probe | Baseline | Tier 1 | Tier 2 (module) | Backend effect |
|---|---|---|---|---|
benign upload {"filename":"notes.txt"} | 200 | 403 (false positive) | 200 | none |
attack: stored XSS in filename <script>alert(1)</script> | 200 (xss_stored2 recorded) | 403 | 403 | blocked at tier 2 |
Performance trace (Eden telemetry, live 2026-11-11)
Measured with Eden's built-in request telemetry (gateway.request.baseline
spans, read back through /api/v1/analytics/telemetry?signal=traces), not
client wall-clock. Latency Eden introduces per remediation arm for this case:
| Arm | n | mean | p50 | p95 | min–max |
|---|---|---|---|---|---|
| Tier 1 — declarative policy, blocked request (403) | 15 | 28 µs | 23 µs | 52 µs | 18 µs–52 µs |
| Tier 2 — native module, benign passes through (200) | 23 | 308 µs | 285 µs | 379 µs | 259 µs–736 µs |
| Tier 2 — native module, attack refused (403) | 14 | 147 µs | 131 µs | 259 µs | 107 µs–259 µs |
Eden-added latency for the tier-2 remediation: benign requests complete in 308 µs mean (p50 285 µs, p95 379 µs) in-product, module evaluation included. Honest scope: lab fixtures on one host, fresh connection per measured request, warm requests only; module reactivated shards 2/2 with a fresh signed statement per measurement; spans carry the full authority lineage (module SHA-256, operation, publication). Not the EDEN-3640 performance qualification contract.
Tested against: eden-product-release:1.103.0-single (image sha256:809293e1f0b525ac…, build target
eden_service_single, tooling revision 81a0724a…). Raw data:
module2/telemetry-ab/reviewsx-telemetry.json and module2/tier1-ab/reviewsx-tier1.json.
Authority lifecycle and negatives
Import 201, activation: explicit_required; publisher enroll_key, host
inventory + approve, reader inspect refused 403; tampered-statement admit
400; invalid-signature admit 403; admit prepared (not serving), activate
→ receipt serving_now, applied shards 2/2. Revoke → the identical attack
gets 503 (fail-closed); re-approve + re-activate → 403 again. All recorded
in the evidence JSON.
Honest scope
The fixture reproduces the unescaped-filename shape, not the full plugin
surface. Bypass variants (media-type confusion, alternate fields) are not
bypass-tested; the rule is a lab-grade partial. Module binary SHA-256
03aec999…, source modules/gabriel_reviewsx_v1.rs.
Cost record
Run window 16:47:31Z → 16:47:40Z (per-CVE ledger, marginal session cost).
Evidence appendix
- Fixture:
gabriel-2026-11-11/fixtures9.py(make_reviewsx, port 18304) - Evidence:
gabriel-2026-11-11/module2/evidence/reviewsx-module.json - Module source:
docs/case-studies/modules/gabriel_reviewsx_v1.rs
The vulnerability
The Reviews & Rating uploader stores a caller-supplied filename unescaped,
persisting script tags. The fixture (make_reviewsx) reproduces the shape: an
upload whose filename carries <script>alert(1)</script> records a
stored-XSS mark.
The Eden patch
Tier 1 — declarative policy (blunt, fail-closed): deny every request under
/wp-admin/admin-ajax.php, ordinary review uploads included — false positives
measured below.
Tier 2 — native Rust module gabriel_reviewsx_v1 (surgical): refuses
upload bodies carrying script-opening tags (<script); ordinary filenames
(notes.txt) pass unchanged.
Measured comparison (fixtures9, run 2026-11-11)
| Probe | Baseline | Tier 1 | Tier 2 (module) | Backend effect |
|---|---|---|---|---|
benign upload {"filename":"notes.txt"} | 200 | 403 (false positive) | 200 | none |
attack: stored XSS in filename <script>alert(1)</script> | 200 (xss_stored2 recorded) | 403 | 403 | blocked at tier 2 |
Performance trace (Eden telemetry, live 2026-11-11)
Measured with Eden's built-in request telemetry (gateway.request.baseline
spans, read back through /api/v1/analytics/telemetry?signal=traces), not
client wall-clock. Latency Eden introduces per remediation arm for this case:
| Arm | n | mean | p50 | p95 | min–max |
|---|---|---|---|---|---|
| Tier 1 — declarative policy, blocked request (403) | 15 | 28 µs | 23 µs | 52 µs | 18 µs–52 µs |
| Tier 2 — native module, benign passes through (200) | 23 | 308 µs | 285 µs | 379 µs | 259 µs–736 µs |
| Tier 2 — native module, attack refused (403) | 14 | 147 µs | 131 µs | 259 µs | 107 µs–259 µs |
Authority lifecycle and negatives
Import 201, activation: explicit_required; publisher enroll_key, host
inventory + approve, reader inspect refused 403; tampered-statement admit
400; invalid-signature admit 403; admit prepared (not serving), activate
→ receipt serving_now, applied shards 2/2. Revoke → the identical attack
gets 503 (fail-closed); re-approve + re-activate → 403 again. All recorded
in the evidence JSON.
Honest scope
The fixture reproduces the unescaped-filename shape, not the full plugin
surface. Bypass variants (media-type confusion, alternate fields) are not
bypass-tested; the rule is a lab-grade partial. Module binary SHA-256
03aec999…, source modules/gabriel_reviewsx_v1.rs.
Cost record
Run window 16:47:31Z → 16:47:40Z (per-CVE ledger, marginal session cost).