{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-43825 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-43825 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-43825 is a high-severity unsafe deserialization vulnerability in Apache OpenNLP :: Core :: ML :: LibSVM, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-43825 and fix it if it is affected.\n\nWhat it is: CVE-2026-43825 is a high-severity unsafe deserialization vulnerability in Apache OpenNLP :: Core :: ML :: LibSVM, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-43825 in the wild and no public exploit code.\n\nAffected product: Apache OpenNLP :: Core :: ML :: LibSVM. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-43825/ (Markdown: https://insights.sbomify.com/CVE-2026-43825/index.md)","id":"CVE-2026-43825","markdown":"https://insights.sbomify.com/CVE-2026-43825/index.md","name":"CVE-2026-43825","record":{"aliases":["GHSA-g4fv-7mf3-543r","UBUNTU-CVE-2026-43825"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Java NLP library","requires_auth":"none","summary":"Attackers can execute arbitrary code by supplying malicious serialized data to the SvmDoccatModel deserialization method in Apache OpenNLP.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"opennlp","vendor":"apache"}],"cvss":{"score":7.3,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Untrusted Java Deserialization in Apache OpenNLP SvmDoccatModel\n\nVersions Affected:\n  before 3.0.0-M4 (libsvm document categorization module; introduced in\n  OPENNLP-1808 and only present on the 3.x line)\n\nDescription:\nSvmDoccatModel.deserialize(InputStream) reads an attacker-controlled\nstream with java.io.ObjectInputStream and calls readObject() without an\nObjectInputFilter installed. ObjectInputStream materialises every class\nreferenced in the stream before the resulting object is cast to\nSvmDoccatModel, so the cast that follows readObject() executes only\nafter the foreign object graph has already been deserialised in full.\n\nIf a Java deserialization gadget chain is available on the consumer's\nclasspath, a crafted payload supplied to\ndeserialize() executes arbitrary code in the JVM that loads it. Apache\nOpenNLP itself does not ship a known gadget chain, so the realistic\nrisk is to downstream applications that embed the libsvm module\nalongside vulnerable transitive dependencies. The method is public and\nstatic, so any caller can pass an untrusted stream to it directly.\n\nThe practical impact is remote code execution against processes that\nload SvmDoccatModel instances from untrusted or semi-trusted origins.\n\nMitigation:\n\n3.x users should upgrade to 3.0.0-M4.\n\nUsers who cannot upgrade immediately should treat all serialized\nSvmDoccatModel streams as untrusted input unless their provenance is\nverified, and should avoid invoking SvmDoccatModel.deserialize() on\nstreams supplied by end users or fetched from third-party sources\nwithout integrity checks.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Apache OpenNLP :: Core :: ML :: LibSVM: Unsafe Java Deserialization in SvmDoccatModel","id":"CVE-2026-43825","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Airflow Providers OpenSearch: OpenSearch task-log handler leaks credentials embedded in the host URL","id":"CVE-2026-43826"},"packages":[],"prev":{"headline":"Information disclosure in Argo CD","id":"CVE-2026-43824"},"products":["Apache OpenNLP :: Core :: ML :: LibSVM"],"published":"2026-07-06","related":[{"cvss_score":10,"headline":"Apache OpenNLP, Apache OpenNLP: ReDoS / stack exhaustion in RegexNameFinderFactory built-in EMAIL and URL patterns","id":"CVE-2026-82617","kev_date_added":null,"published":"2026-09-11"},{"cvss_score":9.8,"headline":"Apache OpenNLP: Arbitrary Class Instantiation via Model Manifest in ExtensionLoader","id":"CVE-2026-42027","kev_date_added":null,"published":"2026-05-04"},{"cvss_score":9.8,"headline":"Improper Restriction of XML External Entity Reference in Apache OpenNLP","id":"CVE-2017-12620","kev_date_added":null,"published":"2017-10-02"},{"cvss_score":9.1,"headline":"Apache OpenNLP: XXE via Dictionary Parsing in DictionaryEntryPersistor","id":"CVE-2026-40682","kev_date_added":null,"published":"2026-05-04"},{"cvss_score":7.5,"headline":"Apache OpenNLP: OOM DoS via Unbounded Array Allocation in SymSpellModelSerializer","id":"CVE-2026-67211","kev_date_added":null,"published":"2026-09-11"},{"cvss_score":7.5,"headline":"Apache OpenNLP: OOM DoS via Unbounded Array Allocation in AbstractModelReader","id":"CVE-2026-42440","kev_date_added":null,"published":"2026-05-04"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-06","vendors":["Apache Software Foundation"]},"summary":"Attackers can execute arbitrary code by supplying malicious serialized data to the SvmDoccatModel deserialization method in Apache OpenNLP.","url":"https://insights.sbomify.com/CVE-2026-43825/"}