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jackson-databind @JsonIgnoreProperties Case-Insensitive Bypass (CVE-2026-54515)

Security Advisory CVE-2026-54515 Medium FasterXML/jackson-databind
Affected:
  • com.fasterxml.jackson.core:jackson-databind < 2.18.9
  • com.fasterxml.jackson.core:jackson-databind >= 2.19.0, < 2.21.5
  • com.fasterxml.jackson.core:jackson-databind >= 2.22.0, < 2.22.1
  • com.fasterxml.jackson.core:jackson-databind >= 3.1.0, < 3.1.4
  • tools.jackson.core:jackson-databind < 2.18.9
Fixed in:
  • 2.18.9
  • 2.21.5
  • 2.22.1
  • 3.1.4
Referenced CVEs: CVE-2026-54515 · 5.3
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