CVE-2026-29023
CVE-2026-29023 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (15th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10344
- Weakness: CWE-798
- Published:
- Last modified:
Description
Keygraph Shannon contains a hard-coded API key in its router configuration that, when the router component is enabled and exposed, allows network attackers to authenticate using the publicly known static key. An attacker able to reach the router port can proxy requests through the Shannon instance using the victim’s configured upstream provider API credentials, resulting in unauthorized API usage and potential disclosure of proxied request and response data. This vulnerability's general exploitability has been mitigated with the introduction of commit 023cc95.
Frequently asked questions
- What is CVE-2026-29023?
- Keygraph Shannon contains a hard-coded API key in its router configuration that, when the router component is enabled and exposed, allows network attackers to authenticate using the publicly known static key. An attacker able to reach the router port can proxy requests through the Shannon instance using the victim’s configured upstream provider API credentials, resulting in unauthorized API usage and potential disclosure of proxied request and response data. This vulnerability's general exploitability has been mitigated with the introduction of commit 023cc95.
- How severe is CVE-2026-29023?
- CVE-2026-29023 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-29023 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-29023?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-29023 have an EU (EUVD) identifier?
- Yes. CVE-2026-29023 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10344.
- When was CVE-2026-29023 published?
- CVE-2026-29023 was published on 2026-03-09 and last updated on 2026-06-17.
References
- https://github.com/KeygraphHQ/shannon/issues/186
- https://github.com/KeygraphHQ/shannon/pull/224
- https://github.com/KeygraphHQ/shannon/pull/224/changes/023cc953db742602964b7826105278d15c28a420
- https://www.vulncheck.com/advisories/keygraph-shannon-hard-coded-router-api-key
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