CVE-2026-97869langchain4j LangChain4j-agentic AgenticScopeJsonSerializationIT.java AgenticScopeSerializer.fromJson deserialization
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27. This vulnerability affects the function AgenticScopeSerializer.fromJson of the file AgenticScopeJsonSerializationIT.java of the component LangChain4j-agentic. This manipulation causes deserialization. Remote exploitation of the attack is possible. The attack's complexity is rated as high. It is stated that the exploitability is difficult. The exploit has been published and may be used. Upgrading to version 1.5.3-beta11, 1.11.10-beta19 and 1.18.1-beta28 is able to resolve this issue. Upgrading the affected component is advised. The project maintainer kindly explains: "The issue was reported to us privately on 23 July 2026 and fixed in releases published on 29 July 2026. It is tracked as GHSA-gmwr-7wmf-mrjm. Exploitation requires an application to have enabled AgenticScope persistence, which is opt-in, and an attacker who can already write to that store. All maintained release lines have been patched."
- CVSS
- 4.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-502, CWE-20
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n/a langchain4j langchain4j:langchain4j | 1.5.3-beta10; 1.11.10-beta18; 1.18.1-beta27; 1.5.3-beta11 not affected; 1.11.10-beta19 not affected; 1.18.1-beta28 not affected | CNA record |
References
- https://vuldb.com/vuln/409886vdb-entry, technical-description
- https://vuldb.com/vuln/409886/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-97869third-party-advisory
- https://vuldb.com/submit/911825third-party-advisory
- https://github.com/langchain4j/langchain4j/security/advisories/GHSA-gmwr-7wmf-mrjmrelated
- https://github.com/afish3201-debug/CVE/blob/main/Insecure%20Jackson%20Default%20Typing%20Leads%20to%20Arbitrary%20Class%20Instantiation%20in%20LangChain4j%20Agentic%20Module.mdexploit
- https://github.com/langchain4j/langchain4j/releases/tag/1.18.1patch
- https://github.com/langchain4j/langchain4j/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.