critical · CVSS v3 9.8 · CVSS v4 9.5

CVE-2026-123870

The otterdog webapp evaluates a format-string built from the incoming GitHub webhook JSON body using Python's eval(). Wh…

Description

The otterdog webapp evaluates a format-string built from the incoming GitHub webhook JSON body using Python's eval(). When the GITHUB_WEBHOOK_SECRET configuration value is unset or empty (the code default is None), the HMAC signature check is skipped entirely, allowing an unauthenticated network client to reach the eval() sink with attacker-controlled input and execute arbitrary Python on the webapp host.

Scores

Severity
critical
CVSS v2
7.5
CVSS v3
9.8
CVSS v4
9.5
EPSS
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