jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.8.0 until 2.18.9, 2.21.5, and 3.1.4, in BeanDeserializerBase.createContextual(), per-property @JsonIgnoreProperties exclusions are applied by _handleByNameInclusion(), producing a contextual deserializer whose BeanPropertyMap has the ignored properties removed. The subsequent per-property case-insensitivity block (triggered by @JsonFormat(ACCEPT_CASE_INSENSITIVE_PROPERTIES)) rebuilds from this._beanProperties (the original, unfiltered map) instead of contextual._beanProperties, then overwrites the filtered map — restoring every property _handleByNameInclusion had just removed. The ignored property becomes writable again. This vulnerability is fixed in 2.18.9, 2.21.5, and 3.1.4.
CVE-2026-54515
This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EG Risk
- 28(Track)EG Risk 28/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity53% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 27%
- KEV
- Not listed
Published
June 23, 2026
Last Modified
June 29, 2026
Advisory Details (4)
Auto-updated Jun 25, 2026Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties in jackson-databind · Advisory · FasterXML/jackson-databind · GitHub
Affected: 2.18.9, 2.21.5, 2.22.1 and 3.1.4.
https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6vFix #5962: Case-insensitive deserialization may use wrong `@JsonIgnoreProperties` by cowtowncoder · Pull Request #5964 · FasterXML/jackson-databind · GitHub
https://github.com/FasterXML/jackson-databind/issues/5964Case-insensitive deserialization may use wrong `@JsonIgnoreProperties` [CVE-2026-54515] · Issue #5962 · FasterXML/jackson-databind · GitHub
https://github.com/FasterXML/jackson-databind/issues/5962commit 0e1b0b211f7a (FasterXML/jackson-databind)
Fix landed in FasterXML/jackson-databind commit 0e1b0b211f7a — awaiting tagged release
https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5faVendor Advisories for CVE-2026-54515(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(6 across 5 ecosystems)
Maven(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| com.fasterxml.jackson.core:jackson-databind | 2.22.0 | 2.22.1 | — |
| tools.jackson.core:jackson-databind | 3.1.0, 3.1.1, 3.1.2, 3.1.3 | 3.1.4 | — |
Debian:11(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| jackson-databind | 2.12.1-1 ... 2.14.0-1 (10 versions) | — | — |
Debian:12(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| jackson-databind | 2.14.0+ds-1, 2.14.0+ds-2, 2.14.0-1, 2.14.0-1+deb12u1 | — | — |
Debian:13(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| jackson-databind | 2.14.0+ds-1, 2.14.0+ds-1+deb13u1, 2.14.0+ds-2 | — | — |
Debian:14(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| jackson-databind | 2.14.0+ds-1, 2.14.0+ds-2 | — | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 50× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-25 13:49 UTCEPSS rescore
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- 2026-06-23 21:30 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-54515?
When was CVE-2026-54515 disclosed?
Is CVE-2026-54515 actively exploited?
What is the CVSS score of CVE-2026-54515?
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Dependency Blast Radius
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