# CVE-2022-0540: Atlassian Jira Core Server

- Exploited (CISA KEV): no
- Published: 2022-04-20
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 88.1% (100th percentile)

A vulnerability in Jira Seraph allows a remote, unauthenticated attacker to bypass authentication by sending a specially crafted HTTP request. This affects Atlassian Jira Server and Data Center versions before 8.13.18, versions 8.14.0 and later before 8.20.6, and versions 8.21.0 and later before 8.22.0. This also affects Atlassian Jira Service Management Server and Data Center versions before 4.13.18, versions 4.14.0 and later before 4.20.6, and versions 4.21.0 and later before 4.22.0.

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2023-01-17 | 272 |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

### F5

- 2023-01-17 · new · rule 200013055
  > Added: signature 200013055 "Jira Seraph authentication bypass using ';'" (Authentication/Authorization Attacks, risk Medium), systems: System Independent. References: CVE-2022-0540.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2023-02-14 · new · rule 200013055
  > Added: signature 200013055 "Jira Seraph authentication bypass using ';'" (Authentication/Authorization Attacks, risk Medium), systems: System Independent. References: CVE-2022-0540.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 2 requests blocked), template CVE-2022-0540, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 2 requests blocked), template CVE-2022-0540, 2026-11-02

"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-2022-0540 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2022-0540