{"answers":{"affected":"3 open source packages ship an affected version, including pyblade.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5559 exists.","fix":"No fix has been published for CVE-2026-5559 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-5559 is a medium-severity code injection vulnerability in AntaresMugisho PyBlade, published on 5 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-5559 and fix it if it is affected.\n\nWhat it is: CVE-2026-5559 is a medium-severity code injection vulnerability in AntaresMugisho PyBlade, published on 5 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5559 exists.\n\nAffected packages and fixed versions:\n- pyblade (PyPI): affected from 0.1.8-alpha up to 0.2.0-alpha; no fix listed\n- pyblade (PyPI): affected from 0.1.8-alpha up to 0.2.0-alpha; no fix listed\n- pyblade (PyPI): affected from 0.1.8-alpha up to 0.2.0-alpha; no fix listed\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-2026-5559/ (Markdown: https://insights.sbomify.com/CVE-2026-5559/index.md)","id":"CVE-2026-5559","markdown":"https://insights.sbomify.com/CVE-2026-5559/index.md","name":"CVE-2026-5559","record":{"aliases":["GHSA-23jg-5f8m-gw8c","PYSEC-2026-2975"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Python template engine","requires_auth":"low_privilege","summary":"Remote attackers can execute arbitrary code via improper AST validation in the PyBlade template engine, requiring immediate mitigation due to public exploit availability.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-791","name":"Incomplete Filtering of Special Elements"},{"id":"CWE-1336","name":"Improper Neutralization of Special Elements Used in a Template Engine"}],"description":"A vulnerability has been found in AntaresMugisho PyBlade 0.1.8-alpha/0.1.9-alpha. The affected element is the function _is_safe_ast of the file sandbox.py of the component AST Validation. Such manipulation leads to improper neutralization of special elements used in a template engine. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"AntaresMugisho PyBlade AST Validation sandbox.py _is_safe_ast special elements used in a template engine","id":"CVE-2026-5559","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":3,"n_references":6,"next":{"headline":"PHPGurukul Online Shopping Portal Project Parameter payment-method.php sql injection","id":"CVE-2026-5560"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0.1.8-alpha"],"last_affected":["0.2.0-alpha"],"package":"pyblade","purl":null,"source":"GHSA-23jg-5f8m-gw8c"},{"ecosystem":"PyPI","fixed":[],"introduced":["0.1.8-alpha"],"last_affected":["0.2.0-alpha"],"package":"pyblade","purl":"pkg:pypi/pyblade","source":"GHSA-23jg-5f8m-gw8c"},{"ecosystem":"PyPI","fixed":[],"introduced":["0.1.8-alpha"],"last_affected":["0.2.0-alpha"],"package":"pyblade","purl":"pkg:pypi/pyblade","source":"PYSEC-2026-2975"}],"prev":{"headline":"PHPGurukul PHPGurukul Online Shopping Portal Project Parameter pending-orders.php sql injection","id":"CVE-2026-5558"},"products":["PyBlade"],"published":"2026-04-05","related":[],"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":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-06","vendors":["AntaresMugisho"]},"summary":"Remote attackers can execute arbitrary code via improper AST validation in the PyBlade template engine, requiring immediate mitigation due to public exploit availability.","url":"https://insights.sbomify.com/CVE-2026-5559/"}