# CVE-2019-12422: Apache Shiro

- Exploited (CISA KEV): no
- Published: 2019-11-18
- CVSS: not scored
- EPSS: 9.1% (95th percentile)

Apache Shiro before 1.4.2, when using the default "remember me" configuration, cookies could be susceptible to a padding attack.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | Before feed history | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2023-08-08 | — |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

### F5

- 2023-08-08 · updated · rule 200104638
  > Updated: signature 200104638 "Apache Shiro rememberMe Cookie Unsafe Deserialization" (Server Side Code Injection, risk High), systems: Java Servlets/JSP. References: CVE-2019-12422, CVE-2016-4437.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2023-09-12 · updated · rule 200104638
  > Updated: signature 200104638 "Apache Shiro rememberMe Cookie Unsafe Deserialization" (Server Side Code Injection, risk High), systems: Java Servlets/JSP. References: CVE-2019-12422, CVE-2016-4437.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2019-12422 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2019-12422