CVE-2026-123870 (GCVE-0-2026-123870)

Vulnerability from cvelistv5 – Published: 2026-11-09 09:00 – Updated: 2026-11-09 09:00
VLAI
Title
[Eclipse CSI - otterdog] Unauthenticated remote code execution via eval() on format-string-injected webhook body when GITHUB_WEBHOOK_SECRET is unset
Summary
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.
Severity
9.5 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
  • CWE-95 - Improper neutralization of directives in dynamically evaluated code ('eval injection')
Assigner
eclipse CNA
References
Impacted products
Vendor Product Version
Eclipse Foundation otterdog Affected: 0.9.0 , < 1.3.2 (semver)
Unaffected: 1.3.2
Create a notification for this product.
Credits
Mikaël Barbero Eclipse Foundation
Show details on NVD website
To clipboard 

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          "modules": [
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          "repo": "https://github.com/eclipse-csi/otterdog",
          "vendor": "Eclipse Foundation",
          "versions": [
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              "status": "affected",
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          "type": "finder",
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            }
          ],
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.5,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
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            "vulnIntegrityImpact": "HIGH",
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          "scenarios": [
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        "orgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
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      "references": [
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        {
          "url": "https://github.com/eclipse-csi/otterdog/security/advisories/GHSA-32xf-7j44-xq72"
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        {
          "url": "https://github.com/eclipse-csi/otterdog/commit/bbc9e3ced3665f09fc4632f11b5867524eda7f72"
        }
      ],
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        "discovery": "UNKNOWN"
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      "title": "[Eclipse CSI - otterdog] Unauthenticated remote code execution via eval() on format-string-injected webhook body when GITHUB_WEBHOOK_SECRET is unset",
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    "datePublished": "2026-11-09T09:00:13.022Z",
    "dateReserved": "2026-11-06T16:18:10.512Z",
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    "state": "PUBLISHED"
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