{"answers":{"affected":"2 open source packages ship an affected version, including io.github.ndsev:zserio-runtime. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33524 in the wild and no public exploit code.","fix":"Upgrade io.github.ndsev:zserio-runtime to 2.18.1 or later.","what":"CVE-2026-33524 is a high-severity vulnerability in ndsev zserio, published on 24 Apr 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-2026-33524 and fix it if it is affected.\n\nWhat it is: CVE-2026-33524 is a high-severity vulnerability in ndsev zserio, published on 24 Apr 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-2026-33524 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.github.ndsev:zserio-runtime (Maven): affected all versions; fixed in 2.18.1\n- io.github.ndsev:zserio-runtime (Maven): affected all versions; fixed in 2.18.1\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-2026-33524/ (Markdown: https://insights.sbomify.com/CVE-2026-33524/index.md)","id":"CVE-2026-33524","markdown":"https://insights.sbomify.com/CVE-2026-33524/index.md","name":"CVE-2026-33524","record":{"aliases":["GHSA-cwq5-8pvq-j65j"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Zserio serialization library","requires_auth":"none","summary":"A crafted payload triggers an integer overflow leading to unbounded memory allocation and process crash in the Zserio library.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"zserio","vendor":"nds-association"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, a crafted payload as small as 4-5 bytes can force memory allocations of up to 16 GB, crashing any process with an OOM error (Denial of Service). This vulnerability is fixed in 2.18.1.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Zserio: Integer Overflow in BitStreamReader and Unbounded Memory Allocation in Deserialization","id":"CVE-2026-33524","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Authelia: Improper Neutralization of Input During Web Page Generation Leads to Potential Cross-site Scripting","id":"CVE-2026-33525"},"packages":[{"ecosystem":"Maven","fixed":["2.18.1"],"introduced":["0"],"last_affected":[],"package":"io.github.ndsev:zserio-runtime","purl":null,"source":"GHSA-cwq5-8pvq-j65j"},{"ecosystem":"Maven","fixed":["2.18.1"],"introduced":["0"],"last_affected":[],"package":"io.github.ndsev:zserio-runtime","purl":"pkg:maven/io.github.ndsev/zserio-runtime","source":"GHSA-cwq5-8pvq-j65j"}],"prev":{"headline":"Apache HTTP Server: multiple modules: HTTP response splitting forwarding malicious status line","id":"CVE-2026-33523"},"products":["zserio"],"published":"2026-04-24","related":[{"cvss_score":7.5,"headline":"Zserio: Integer Overflow in BitStreamReader on 32-bit platforms","id":"CVE-2026-33666","kev_date_added":null,"published":"2026-04-24"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-04-27","vendors":["ndsev"]},"summary":"A crafted payload triggers an integer overflow leading to unbounded memory allocation and process crash in the Zserio library.","url":"https://insights.sbomify.com/CVE-2026-33524/"}