9

CVE-2026-0573: github enterprise_server Open Redirect

CVSS: 9.0v3.1CriticalAnalyzed
Published 18-02-2026Last modified 18-02-2026
Open JSON

Vulnerability summary

CVE-2026-0573 is a critical (CVSS 9.0) Open Redirect vulnerability in github enterprise_server. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 53.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.0/10
010
Critical · v3.1 (NVD)
EPSS score
0.74%
0%100%
Low · +0.08 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 18-02-2026
    PublishedVulnerability first disclosed.
  2. 18-02-2026
    Last modifiedVulnerability information updated.

Description

An URL redirection vulnerability was identified in GitHub Enterprise Server that allowed attacker-controlled redirects to leak sensitive authorization tokens. The repository_pages API insecurely followed HTTP redirects when fetching artifact URLs, preserving the authorization header containing a privileged JWT. An authenticated user could redirect these requests to an attacker-controlled domain, exfiltrate the Actions.ManageOrgs JWT, and leverage it for potential remote code execution. Attackers would require access to the target GitHub Enterprise Server instance and the ability to exploit a legacy redirect to an attacker-controlled domain. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.19 and was fixed in versions 3.19.2, 3.18.4, 3.17.10, 3.16.13, 3.15.17, and 3.14.22. This vulnerability was reported via the GitHub Bug Bounty program.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.74%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

+0.08 pp

From 0.66% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.74%

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≥ 3.14, ≤ 3.14.21 | ≥ 3.15, ≤ 3.15.16 | ≥ 3.16, ≤ 3.16.12 | ≥ 3.17, ≤ 3.17.9 | ≥ 3.18, ≤ 3.18.3 | ≥ 3.19, ≤ 3.19.1 | < 3.14.22 | ≥ 3.15.0, < 3.15.17 | ≥ 3.16.0, < 3.16.13 | ≥ 3.17.0, < 3.17.10 | ≥ 3.18.0, < 3.18.4 | ≥ 3.19.0, < 3.19.2

1 vendor · 1 product

References

6 links