CVE-2026-45793

CVE Enrichment

CVSS: 7.5 HIGH
EPSS: 1.02%
EPSS Percentile: 63.43%
CISA KEV: Not listed

Description

Composer is a dependency Manager for the PHP language. Prior to 1.10.28, 2.2.28, and 2.9.8, Composer\IO\BaseIO::loadConfiguration() validates GitHub OAuth tokens with the regex ^[.A-Za-z0-9_]+$ and interpolates rejected tokens into an UnexpectedValueException; GitHub Actions GITHUB_TOKEN values using the ghs_<id>_<base64url-JWT> format can contain -, fail validation, and be disclosed to stderr or CI logs. This issue is fixed in versions 1.10.28, 2.2.28, and 2.9.8.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 16-Jul-2026 00:16
Last Modified: 16-Jul-2026 03:54
EPSS Date: 2026-11-02
CWE: CWE-200

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:N /
                            A:N

References

Last enrichment sync: 03-Nov-2026 04:19
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

The vulnerability has been assigned the CVE identifier CVE-2026-45793 (CVSS score: 7.5). Cybersecurity Roundup: 47 Zero-Days, Cloud Intrusions and AI-Driven Attacks

CVE (1)

Malware (10)

People (5)

Threat Actors (8)

MITRE ATT&CK (13)

Vendors (10)

Products (22)

Tools (1)

Industries (2)

Countries (9)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.