7.7

CVE-2026-19118: github enterprise_server

CVSS: 7.7v4.0HighAnalyzed
Published 01-09-2026Last modified 02-09-2026
Open JSON

Vulnerability summary

CVE-2026-19118 is a high (CVSS 7.7) vulnerability in github enterprise_server. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 51.9% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.7/10
010
High · v4.0 (CVE.org)
EPSS score
0.69%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-09-2026
    PublishedVulnerability first disclosed.
  2. 02-09-2026
    Last modifiedVulnerability information updated.

Description

A time-of-check time-of-use race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution. Exploitation required an authenticated user with write access to a repository and precise timing of concurrent upload requests. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.20, 3.18.14, 3.19.11, 3.20.7, and 3.21.5. This vulnerability was reported via the GitHub Bug Bounty program.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.69%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

+0.16 pp

From 0.53% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.69%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github1 product
  • enterprise_server≥ 3.17.0, ≤ 3.17.19 | ≥ 3.18.0, ≤ 3.18.13 | ≥ 3.19.0, ≤ 3.19.10 | ≥ 3.20.0, ≤ 3.20.6 | ≥ 3.21.0, ≤ 3.21.4 | < 3.17.20 | ≥ 3.18.0, < 3.18.14 | ≥ 3.19.0, < 3.19.11 | ≥ 3.20.0, < 3.20.7 | ≥ 3.21.0, < 3.21.5

1 vendor · 1 product

References

5 links