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GHSA-c6hr-w26q-c636

MediumCVSS 6.9 / 10

Published Mar 2, 2026·Last modified Mar 19, 2026

Affected Components(0)

No affected components available

Description

Summary

extensions/feishu/src/bot.ts constructed new RegExp() directly from Feishu mention metadata (mention.name, mention.key) in stripBotMention() without escaping regex metacharacters.

Affected Packages / Versions

Package: npm openclaw
Affected versions: <= 2026.2.17
First affected release: 2026.2.6
Patched version: 2026.2.19

Impact

ReDoS: crafted nested-quantifier patterns in mention metadata can trigger catastrophic backtracking and block message processing.
Regex injection: metacharacters in mention metadata can remove unintended message content before it is sent to the model.

Fix Commit(s)

7e67ab75cc2f0e93569d12fecd1411c2961fcc8c
74268489137510b6f6349919d1e197b17290d92c

Thanks @allsmog for reporting.

Risk Scores

Base Score

6.9

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence

2.7

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS

0.31%

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.

Browse More

Medium severity

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