{"answers":{"affected":"2 open source packages ship an affected version, including jsrsasign. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-4601 in the wild and no public exploit code.","fix":"Upgrade jsrsasign to 11.1.1 or later.","what":"CVE-2026-4601 is a critical vulnerability in jsrsasign, published on 23 Mar 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-2026-4601 and fix it if it is affected.\n\nWhat it is: CVE-2026-4601 is a critical vulnerability in jsrsasign, published on 23 Mar 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-2026-4601 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- jsrsasign (npm): affected all versions; fixed in 11.1.1\n- jsrsasign (npm): affected all versions; fixed in 11.1.1\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-2026-4601/ (Markdown: https://insights.sbomify.com/CVE-2026-4601/index.md)","id":"CVE-2026-4601","markdown":"https://insights.sbomify.com/CVE-2026-4601/index.md","name":"CVE-2026-4601","record":{"aliases":["GHSA-w8q8-93cx-6h7r"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript crypto library","requires_auth":"none","summary":"Attackers can recover private keys from DSA signatures due to a missing cryptographic step in the jsrsasign library.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"jsrsasign","vendor":"kjur"}],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-325","name":"Missing Cryptographic Step"}],"description":"Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.","ecosystems":["npm"],"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":"jsrsasign: Missing cryptographic validation during DSA signing enables private key extraction","id":"CVE-2026-4601","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":2,"n_references":5,"next":{"headline":"jsrsasign: Negative Exponent Handling Leads to Signature Verification Bypass","id":"CVE-2026-4602"},"packages":[{"ecosystem":"npm","fixed":["11.1.1"],"introduced":["0"],"last_affected":[],"package":"jsrsasign","purl":null,"source":"GHSA-w8q8-93cx-6h7r"},{"ecosystem":"npm","fixed":["11.1.1"],"introduced":["0"],"last_affected":[],"package":"jsrsasign","purl":"pkg:npm/jsrsasign","source":"GHSA-w8q8-93cx-6h7r"}],"prev":{"headline":"jsrsasign: DSA signatures or X.509 certificates can be forged via DSA domain-parameter validation in KJUR.crypto.DSA.setPublic","id":"CVE-2026-4600"},"products":["jsrsasign","org.webjars.npm:jsrsasign"],"published":"2026-03-23","related":[{"cvss_score":9.8,"headline":"RSA PKCS#1 decryption vulnerability with prepending zeros in jsrsasign","id":"CVE-2020-14967","kev_date_added":null,"published":"2020-06-22"},{"cvss_score":9.8,"headline":"RSA-PSS signature validation vulnerability by prepending zeros in jsrsasign","id":"CVE-2020-14968","kev_date_added":null,"published":"2020-06-22"},{"cvss_score":9.3,"headline":"jsrsasign: Incomplete Comparison Allows DSA Private Key Recovery via Biased Nonce Generation","id":"CVE-2026-4599","kev_date_added":null,"published":"2026-03-23"},{"cvss_score":9.1,"headline":"jsrsasign: DSA signatures or X.509 certificates can be forged via DSA domain-parameter validation in KJUR.crypto.DSA.setPublic","id":"CVE-2026-4600","kev_date_added":null,"published":"2026-03-23"},{"cvss_score":9.1,"headline":"RSA signature validation vulnerability on maleable encoded message in jsrsasign","id":"CVE-2021-30246","kev_date_added":null,"published":"2021-04-07"},{"cvss_score":8.7,"headline":"jsrsasign is vulnerable to DoS through Infinite Loop when processing zero or negative inputs","id":"CVE-2026-4598","kev_date_added":null,"published":"2026-03-23"}],"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-10","vendors":["n/a"]},"summary":"Attackers can recover private keys from DSA signatures due to a missing cryptographic step in the jsrsasign library.","url":"https://insights.sbomify.com/CVE-2026-4601/"}