https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 22:34:32 +0000 https://vulnerability.circl.lu/vuln/ghsa-mhm7-754m-9p8w <p><strong>Affected:</strong> Maven: com.fasterxml.jackson.core:jackson-databind</p> <p>## Summary</p> <p>In `BeanDeserializer.deserializeUsingPropertyBasedWithExternalTypeId`, the active-view (`@JsonView`) filter was applied only to the regular bean-property branch; the creator-property branch performed no `creatorProp.visibleInView(activeView)` check. A constructor parameter annotated with both `@JsonView(RestrictedView.class)` and `@JsonTypeInfo(use=Id.NAME, include=As.EXTERNAL_PROPERTY)` is populated from attacker JSON even when a more restrictive view is active.</p> <p>This is a patch gap. GHSA-5hh8 (CVE-2026-54517) and GHSA-rcqc (CVE-2026-54518) descriptions cover only the main property-based path and the unwrapped-creator path respectively; the external-type-id creator path was fixed on the 3.x line via #6004 (&#34;Extend #5969/#5971 fixes to ... external-type-id case in regular BeanDeserializer&#34;, commit 7dc7a17, 2026-05-22) but **the fix was never backported to 2.21 or 2.18**. Users on 2.21.4 and 2.18.8 who upgraded per the published advisories remain vulnerable to the same `@JsonView` bypass technique via a different code path.</p> <p>## Vulnerable Code Path</p> <p>File: `com/fasterxml/jackson/databind/deser/BeanDeserializer.java` Method: `deserializeUsingPropertyBasedWithExternalTypeId`</p> <p>On 2.21.4 (and 2.18.8), the creator-property branch (around line 1125-1158) checks `creatorProp.isInjectionOnly()` and hands off to `ext.handlePropertyValue(...)` / `buffer.assignParameter(...)` without ever consulting `visibleInView(activeView)`:</p> <p>```java if (creatorProp != null) {…</p> <p><strong>Affected:</strong> Maven: com.fasterxml.jackson.core:jackson-databind</p> <p>## Summary</p> <p>In `BeanDeserializer.deserializeUsingPropertyBasedWithExternalTypeId`, the active-view (`@JsonView`) filter was applied only to the regular bean-property branch; the creator-property branch performed no `creatorProp.visibleInView(activeView)` check. A constructor parameter annotated with both `@JsonView(RestrictedView.class)` and `@JsonTypeInfo(use=Id.NAME, include=As.EXTERNAL_PROPERTY)` is populated from attacker JSON even when a more restrictive view is active.</p> <p>This is a patch gap. GHSA-5hh8 (CVE-2026-54517) and GHSA-rcqc (CVE-2026-54518) descriptions cover only the main property-based path and the unwrapped-creator path respectively; the external-type-id creator path was fixed on the 3.x line via #6004 (&#34;Extend #5969/#5971 fixes to ... external-type-id case in regular BeanDeserializer&#34;, commit 7dc7a17, 2026-05-22) but **the fix was never backported to 2.21 or 2.18**. Users on 2.21.4 and 2.18.8 who upgraded per the published advisories remain vulnerable to the same `@JsonView` bypass technique via a different code path.</p> <p>## Vulnerable Code Path</p> <p>File: `com/fasterxml/jackson/databind/deser/BeanDeserializer.java` Method: `deserializeUsingPropertyBasedWithExternalTypeId`</p> <p>On 2.21.4 (and 2.18.8), the creator-property branch (around line 1125-1158) checks `creatorProp.isInjectionOnly()` and hands off to `ext.handlePropertyValue(...)` / `buffer.assignParameter(...)` without ever consulting `visibleInView(activeView)`:</p> <p>```java if (creatorProp != null) {…</p> https://vulnerability.circl.lu/vuln/ghsa-mhm7-754m-9p8w