Advisory details:
github_osv / GHSA-pg2v-8xwh-qhcc
| Advisory ID | github_osv/GHSA-pg2v-8xwh-qhcc |
| Aliases |
CVE-2026-28476
|
| Summary | OpenClaw affected by SSRF in optional Tlon (Urbit) extension authentication ## Summary The optional Tlon (Urbit) extension previously accepted a user-provided base URL for authentication and used it to construct an outbound HTTP request, enabling server-side request forgery (SSRF) in affected deployments. ## Impact This only affects deployments that have installed and configured the Tlon (Urbit) extension, and where an attacker can influence the configured Urbit URL. Under those conditions, the gateway could be induced to make HTTP requests to attacker-chosen hosts (including internal addresses). Deployments that do not use the Tlon extension, or where untrusted users cannot change the Urbit URL, are not impacted. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `<= 2026.2.13` ## Fixed Versions - `2026.2.14` (planned next release) ## Fix Commit(s) - `bfa7d21e997baa8e3437657d59b1e296815cc1b1` ## Details Urbit authentication now validates and normalizes the base URL and uses an SSRF guard that blocks private/internal hosts by default (opt-in: `channels.tlon.allowPrivateNetwork`). ## Release Process Note This advisory is pre-populated with the planned patched version (`2026.2.14`). After `openclaw@2026.2.14` is published to npm, publish this advisory without further edits. Thanks @p80n-sec for reporting. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 7.5 |
| Risk | 3.8 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 8.3 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-pg2v-8xwh-qhcc/GHSA-pg2v-8xwh-qhcc.json |
| cvssv4 | 6.3 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-pg2v-8xwh-qhcc/GHSA-pg2v-8xwh-qhcc.json |
| generic_textual | MODERATE |
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 |
| Attack Vector (AV) | Attack Complexity (AC) | Attack Requirements (AT) | Privileges Required (PR) | User Interaction (UI) | Vulnerable System Impact Confidentiality (VC) | Vulnerable System Impact Integrity (VI) | Vulnerable System Impact Availability (VA) | Subsequent System Impact Confidentiality (SC) | Subsequent System Impact Integrity (SI) | Subsequent System Impact Availability (SA) |
|---|---|---|---|---|---|---|---|---|---|---|
network adjacent local physical |
low high |
none present |
none low high |
none passive active |
high low none |
high low none |
high low none |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-09T18:10:00Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/28xxx/CVE-2026-28476.json
Source Advisory: vulnrichment/CVE-2026-28476
[{'Exploitation': 'none'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]