HOMEVULNERABILITIESCVE-2026-7541
HIGH

CVE-2026-7541

CWE-770Published: May 7, 2026· Updated: May 11, 2026

7.5
CVSS v3.1
EPSS:0.05%probability of exploitation in 30 daysPercentile:15.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-7541 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

GitHub1 product
enterprise server
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://docs.github.com/en/[email protected]/admin/release-notes#3.16.18
ADVISORYhttps://docs.github.com/en/[email protected]/admin/release-notes#3.17.15
ADVISORYhttps://docs.github.com/en/[email protected]/admin/release-notes#3.18.9
ADVISORYhttps://docs.github.com/en/[email protected]/admin/release-notes#3.19.6
ADVISORYhttps://docs.github.com/en/[email protected]/admin/release-notes#3.20.2

All References (5)

→
https://docs.github.com/en/[email protected]/admin/release-notes#3.16.18Release Notes · Vendor Advisory
→
https://docs.github.com/en/[email protected]/admin/release-notes#3.17.15Release Notes · Vendor Advisory
→
https://docs.github.com/en/[email protected]/admin/release-notes#3.18.9Release Notes · Vendor Advisory
→
https://docs.github.com/en/[email protected]/admin/release-notes#3.19.6Release Notes · Vendor Advisory
→
https://docs.github.com/en/[email protected]/admin/release-notes#3.20.2Release Notes · Vendor Advisory

Quick Facts

CVE IDCVE-2026-7541
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-770
CISA KEVNo
EPSS (30d)0.05%
Affected1 vendor
PublishedMay 7, 2026

Related CVEs (CWE-770)

CVE-2026-12818
9.3
CVE-2026-39803
8.7
CVE-2026-32145
8.7
CVE-2026-43973
8.7
CVE-2026-42786
8.7
CVE-2026-48854
8.7

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-7541 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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