PKP Vendor Open Journal System v2.4.8 to v3.3.8 allows attackers to perform reflected cross-site scripting (XSS) attacks via crafted HTTP headers.
Conclusion & alert: CVE-2022-26616 is rated Moderate Risk (48.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.58%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-04-15 | 0.96% | 0.58% | -0.38% |
| 2 | 2025-11-21 | 1.75% | 0.96% | -0.80% |
| 3 | 2025-11-18 | — | 1.75% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.1 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| public_knowledge_project | open_journal_systems | >= 2.4.8, < 3.3.0-9 | cpe:2.3:a:public_knowledge_project:open_journal_systems:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://forum.pkp.sfu.ca/t/ojs-omp-ops-3-3-0-9-released/72236 | Release Notes Vendor Advisory |
| https://github.com/pkp/pkp-lib/issues/7649 | Issue Tracking Mitigation Third Party Advisory |