CVE-2026-7541

published 2026-05-07

CVE-2026-7541: A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause service disruption by sending…

Priority P3 47 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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

10 ranges

Vendor	Product	Version range	Fixed in
github	enterprise_server	< 3.16.18	3.16.18
github	enterprise_server	3.16.0 – 3.16.17	—
github	enterprise_server	>= 3.17.0 < 3.17.15	3.17.15
github	enterprise_server	3.17.0 – 3.17.14	—
github	enterprise_server	>= 3.18.0 < 3.18.9	3.18.9
github	enterprise_server	3.18.0 – 3.18.8	—
github	enterprise_server	>= 3.19.0 < 3.19.6	3.19.6
github	enterprise_server	3.19.0 – 3.19.5	—
github	enterprise_server	>= 3.20.0 < 3.20.2	3.20.2
github	enterprise_server	3.20.0 – 3.20.1	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 6.3 MEDIUM CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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