Technology · Packagist
Composer (Packagist) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in Composer (Packagist): 0 in the last 7 days and 6 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-59944, was published on 16 September 2026.
- Last 7 days
- 0
- Last 90 days
- 6
- Critical, all time
- 0
- Exploited in the wild
- 0
About Composer (Packagist)
PHP dependency manager and package management tool.
Latest Composer (Packagist) vulnerabilities
- CVE-2026-59944: Composer bin path validation bypass via symlinksmediumCVSS 6.1EPSS 0.3%
- CVE-2026-84361: Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and 2.10.3, a malicious dependency package…highCVSS 7.7EPSS 0.5%
- CVE-2026-45793: Composer sensitive information disclosure in GitHub token validationhighCVSS 7.5
- CVE-2026-59948: Composer path traversal via malicious package namehighCVSS 7EPSS 0.1%
- CVE-2026-59947: Composer sensitive information disclosure in verbose debug outputmediumCVSS 4.7EPSS 0.1%
- CVE-2026-59946: Composer path traversal in package bin fieldmediumCVSS 6.1EPSS 0.1%
- CVE-2026-10043: MosaicML Composer insecure deserialization in checkpoint parsinghighCVSS 7.8
- CVE-2026-40261: Composer command injection in Perforce repository handlinghighCVSS 8.8EPSS 1.7%
- CVE-2026-40176: Composer command injection in Perforce repository handlinghighCVSS 7.8EPSS 1.1%
Most severe Composer (Packagist) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-40261: Composer command injection in Perforce repository handlinghighCVSS 8.8EPSS 1.7%
- CVE-2026-40176: Composer command injection in Perforce repository handlinghighCVSS 7.8EPSS 1.1%
- CVE-2026-10043: MosaicML Composer insecure deserialization in checkpoint parsinghighCVSS 7.8
- CVE-2026-84361: Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and 2.10.3, a malicious dependency package…highCVSS 7.7EPSS 0.5%
- CVE-2026-45793: Composer sensitive information disclosure in GitHub token validationhighCVSS 7.5
- CVE-2026-59948: Composer path traversal via malicious package namehighCVSS 7EPSS 0.1%
- CVE-2026-59944: Composer bin path validation bypass via symlinksmediumCVSS 6.1EPSS 0.3%
- CVE-2026-59946: Composer path traversal in package bin fieldmediumCVSS 6.1EPSS 0.1%
- CVE-2026-59947: Composer sensitive information disclosure in verbose debug outputmediumCVSS 4.7EPSS 0.1%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 3 | 0 | |
| 13 Jul 2026 | 1 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 1 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/composer.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Composer (Packagist) vulnerabilities", https://junglewise.ai/threats/technologies/composer, 26 September 2026.