Advisory details:
github_osv / GHSA-fhvm-j76f-qmjv
| Advisory ID | github_osv/GHSA-fhvm-j76f-qmjv |
| Aliases |
CVE-2026-28454
|
| Summary | OpenClaw has a potential access-group authorization bypass if channel type lookup fails ## Summary When Telegram webhook mode is enabled without a configured webhook secret, OpenClaw may accept unauthenticated HTTP POST requests at the Telegram webhook endpoint and trust attacker-controlled update JSON. This can allow forged Telegram updates that spoof `message.from.id` / `chat.id`, potentially bypassing sender allowlists and executing privileged bot commands. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected: `<= 2026.1.30` - Patched: `>= 2026.2.1` ## Impact An attacker who can reach the webhook endpoint can forge Telegram updates and impersonate allowlisted/paired senders by spoofing fields in the webhook payload (for example `message.from.id`). Impact depends on enabled commands/tools and the deployment’s network exposure. ## Mitigations / Workarounds - Configure a strong `channels.telegram.webhookSecret` and ensure your reverse proxy forwards the `X-Telegram-Bot-Api-Secret-Token` header unchanged. ## Fix Commit(s) - ca92597e1f9593236ad86810b66633144b69314d (config validation: `webhookUrl` requires `webhookSecret`) Defense-in-depth / supporting fixes: - 5643a934799dc523ec2ef18c007e1aa2c386b670 (default webhook listener bind host to loopback) - 3cbcba10cf30c2ffb898f0d8c7dfb929f15f8930 (bound webhook request body size/time) - 633fe8b9c17f02fcc68ecdb5ec212a5ace932f09 (runtime guard: reject webhook startup when secret is missing/empty) ## Release Process Note `patched_versions` is set to the first fixed release (`2026.2.1`). Thanks @yueyueL for reporting. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 8.8 |
| Risk | 4.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| CWE-285 | Improper Authorization |
| CWE-345 | Insufficient Verification of Data Authenticity |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 9.8 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-fhvm-j76f-qmjv/GHSA-fhvm-j76f-qmjv.json |
| cvssv4 | 9.1 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-fhvm-j76f-qmjv/GHSA-fhvm-j76f-qmjv.json |
| generic_textual | CRITICAL |
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/2026-03-09T16:59:54Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/28xxx/CVE-2026-28454.json
Source Advisory: vulnrichment/CVE-2026-28454
[{'Exploitation': 'none'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]