GHSA-rvwf-54qp-4r6v · Severity: high · Ecosystem: maven — SnakeYAML Entity Expansion during load operation
The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.
Conclusion & alert: CVE-2017-18640 is rated High Exploit Risk (76.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.60%). Core evidence: 2 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 ↗ | |
| — | 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 | 2026-06-13 | 2.77% | 3.60% | +0.84% |
| 2 | 2026-05-05 | 2.17% | 2.77% | +0.60% |
| 3 | 2025-07-09 | — | 2.17% | — |
Full EPSS history (21 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
GHSA-rvwf-54qp-4r6v · Severity: high · Ecosystem: maven — SnakeYAML Entity Expansion during load operation
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-18640 not yet assigned priority: Debian including 1 source packages (snakeyaml), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-18640 |
gentoo
|
low | CVE-2017-18640: 1 GLSA(s) (202305-28), 1 atom(s) (dev-java/snakeyaml); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-18640 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-18640 |
suse
|
high | CVE-2017-18640 severity important: SUSE including 244 source package names (3.3.2-2.3:snakeyaml-1.28-3.5.1, 5.0.0-beta1.2.122:snakeyaml-1.28-3.5.1, …), 269 product×package rows across 35 product lines (Container containers/apache-pulsar, Container suse/manager/5.0/x86_64/server, … (35 product lines)): Known Affected 231, Fixed 38. | https://www.suse.com/security/cve/CVE-2017-18640/ |
ubuntu
|
medium | CVE-2017-18640 medium priority: Ubuntu including 1 source packages (snakeyaml), 17 status rows across 17 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): ignored 8, released 5, not-affected 4. | https://ubuntu.com/security/CVE-2017-18640 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| snakeyaml_project | snakeyaml | < 1.26 | cpe:2.3:a:snakeyaml_project:snakeyaml:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 31 | cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* |
| fedoraproject | fedora | 32 | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
| quarkus | quarkus | <= 1.3.4 | cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:* |
| oracle | peoplesoft_enterprise_pt_peopletools | 8.56 | cpe:2.3:a:oracle:peoplesoft_enterprise_pt_peopletools:8.56:*:*:*:*:*:*:* |
| oracle | peoplesoft_enterprise_pt_peopletools | 8.57 | cpe:2.3:a:oracle:peoplesoft_enterprise_pt_peopletools:8.57:*:*:*:*:*:*:* |
| oracle | peoplesoft_enterprise_pt_peopletools | 8.58 | cpe:2.3:a:oracle:peoplesoft_enterprise_pt_peopletools:8.58:*:*:*:*:*:*:* |