Advisory details:
github_osv / GHSA-hv93-r4j3-q65f
| Advisory ID | github_osv/GHSA-hv93-r4j3-q65f |
| Aliases | |
| Summary | OpenClaw Hook Session Key Override Enables Targeted Cross-Session Routing ## Summary The issue is not deterministic session keys by itself. The exploitable path was accepting externally supplied `sessionKey` values on authenticated hook ingress, allowing a hook token holder to route messages into chosen sessions. ## Affected Behavior - `POST /hooks/agent` accepted payload `sessionKey` and used it directly for session routing. - Common session-key shapes (for example `agent:main:dm:<peerId>`) were often derivable from known metadata, making targeted routing practical when request-level override was enabled. ## Attack Preconditions - Attacker can call hook endpoints with a valid hook token. - Hook ingress allows request-selected `sessionKey` values. - Target session keys can be derived or guessed. Without those preconditions, deterministic key formats alone do not provide access. ## Impact - Integrity: targeted message/prompt injection into chosen sessions. - Persistence: poisoned context can affect subsequent turns when the same session key is reused. - Confidentiality impact is secondary and depends on additional weaknesses. ## Affected Versions - `openclaw` `>= 2.0.0-beta3` and `< 2026.2.12` ## Patched Versions - `openclaw` `>= 2026.2.12` ## Fix OpenClaw now uses secure defaults for hook session routing: - `POST /hooks/agent` rejects payload `sessionKey` unless `hooks.allowRequestSessionKey=true`. - Added `hooks.defaultSessionKey` for fixed ingress routing. - Added `hooks.allowedSessionKeyPrefixes` to constrain explicit routing keys. - Security audit warns on unsafe hook session-routing settings. ## Recommended Configuration ```json { "hooks": { "enabled": true, "token": "${OPENCLAW_HOOKS_TOKEN}", "defaultSessionKey": "hook:ingress", "allowRequestSessionKey": false, "allowedSessionKeyPrefixes": ["hook:"] } } ``` ## Credit Thanks @alpernae for responsible reporting. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 6.4 |
| Risk | 3.2 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 7.1 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-hv93-r4j3-q65f/GHSA-hv93-r4j3-q65f.json |
| generic_textual | HIGH |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
There are no SSVC decisions available.