GHSA-725m-w832-q973 · Severity: high · Ecosystem: composer — Composer allows cache poisoning from other projects built on the same host
Composer before 2016-02-10 allows cache poisoning from other projects built on the same host. This results in attacker-controlled code entering a server-side build process. The issue occurs because of the way that dist packages are cached. The cache key is derived from the package name, the dist type, and certain other data from the package repository (which may simply be a commit hash, and thus can be found by an attacker). Versions through 1.0.0-alpha11 are affected, and 1.0.0 is unaffected.
Conclusion & alert: CVE-2015-8371 is rated High Exploit Risk (75.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.74%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-02 | 0.89% | 0.74% | -0.16% |
| 2 | 2026-04-14 | 0.80% | 0.89% | +0.09% |
| 3 | 2026-04-01 | — | 0.80% | — |
Full EPSS history (45 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
GHSA-725m-w832-q973 · Severity: high · Ecosystem: composer — Composer allows cache poisoning from other projects built on the same host
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-8371 not yet assigned priority: Debian including 1 source packages (composer), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2015-8371 |
ubuntu
|
medium | CVE-2015-8371 medium priority: Ubuntu including 1 source packages (composer), 9 status rows across 9 suites (artful, bionic, precise, trusty, upstream, wily, xenial, yakkety, zesty): ignored 4, DNE 2, not-affected 2, released 1. | https://ubuntu.com/security/CVE-2015-8371 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha1:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha10:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha11:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha2:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha3:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha4:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha5:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha6:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha7:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha8:*:*:*:*:*:* |
| getcomposer | composer | 1.0.0 | cpe:2.3:a:getcomposer:composer:1.0.0:alpha9:*:*:*:*:*:* |