Improper Verification of Cryptographic Signature in Tolgee - #VU133251
Published: June 2, 2026
Vulnerability identifier: #VU133251
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Tolgee
Affected software:
Tolgee
Tolgee
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper verification of cryptographic signature in SlackEventsController.validateAndParsePayload() and the /on-bot-event handler when processing crafted Slack bot-event payloads containing both a redirect value and an app_uninstalled event. A remote attacker can send a specially crafted request to cause a denial of service.
Successful exploitation requires knowledge or guessing of a connected Slack team_id and results in deletion of the corresponding Slack workspace integration, disabling Slack notifications and subscriptions until the workspace is reconnected.
Remediation
Install security update from vendor's website.