# CVE-2026-7541: Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via unauthenticated API endpoint

> CVE-2026-7541: Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via unauthenticated API endpoint. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-7541
Last updated: 2026-06-17T11:02:33Z

- Published: 2026-05-07 21:18 UTC · Updated: 2026-06-17 11:02 UTC · Assigner: GitHub\_P
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.39%, 33th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-770

## Description

A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause service disruption by sending crafted requests with deeply nested JSON payloads to an unauthenticated API endpoint. The endpoint parsed user-controlled JSON request bodies without size or depth limits, causing excessive CPU and memory consumption. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18. This vulnerability was reported via the GitHub Bug Bounty program.

## Affected vendors and products

- GitHub: Enterprise Server

## Tracked companies

- [GitHub](https://rewindex.com/company/github.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-7541)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-7541)
- [https://docs.github.com/en/enterprise-server@3.16/admin/release-notes\#3.16.18](https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18)
- [https://docs.github.com/en/enterprise-server@3.17/admin/release-notes\#3.17.15](https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15)
- [https://docs.github.com/en/enterprise-server@3.18/admin/release-notes\#3.18.9](https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9)
- [https://docs.github.com/en/enterprise-server@3.19/admin/release-notes\#3.19.6](https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6)
- [https://docs.github.com/en/enterprise-server@3.20/admin/release-notes\#3.20.2](https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-7541 · Markdown: https://rewindex.com/cve/CVE-2026-7541.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-7541 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:17.563Z