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GHSA-2c5x-4jgf-88mj

MediumCVSS 4.3 / 10
Published May 21, 2026·Last modified May 21, 2026
Affected Components(0)

No affected components available

Description

Summary

The request-filtering-agent SSRF protection was non-functional in the four notification webhook plugins (Slack, Discord, Mattermost, Teams) because httpAgent / httpsAgent were passed as part of the request body rather than the axios config. An authenticated user with hook-creation permission could direct outbound POST requests to arbitrary internal hosts.

Details

axios.post(url, data, config) expects connection agents in the third (config) argument. In all four plugins, the agents were placed in the second (data) argument and serialised as JSON body content:

// packages/nocodb/src/plugins/slack/Slack.ts (and Discord / Mattermost / Teams — identical pattern)
return await axios.post(webhook_url, {
  text,
  httpAgent: useAgent(webhook_url),   // wrong position — serialised, not used
  httpsAgent: useAgent(webhook_url),
});

The webhook flow: an Editor+ user creates a webhook with notification.payload.channels[].webhook_url pointing to an internal host; on trigger, WebhookInvoker.invoke() calls the plugin's sendMessage() which performs the outbound axios.post with no SSRF filtering applied.

This is distinct from GHSA-xr7v-j379-34v9, which covers a blind SSRF via HEAD in the upload-by-URL path.

Impact

  • Authenticated user (Editor+) can reach cloud-metadata endpoints (169.254.169.254) and internal services.
  • Combined with verbose hook logging (NC_AUTOMATION_LOG_LEVEL=ALL), response bodies may be exfiltrated.

Credit

This issue was reported by @ik0z.

Risk Scores
Base Score
4.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.

Threat Intelligence
4.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.18%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Medium severity
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