{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40911 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40911 is a medium-severity vulnerability in RRWO Net::CIDR::Set, published on 27 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-40911 and fix it if it is affected.\n\nWhat it is: CVE-2025-40911 is a medium-severity vulnerability in RRWO Net::CIDR::Set, published on 27 May 2025. 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-2025-40911 in the wild and no public exploit code.\n\nAffected product: RRWO Net::CIDR::Set. 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-2025-40911/ (Markdown: https://insights.sbomify.com/CVE-2025-40911/index.md)","id":"CVE-2025-40911","markdown":"https://insights.sbomify.com/CVE-2025-40911/index.md","name":"CVE-2025-40911","record":{"aliases":["DEBIAN-CVE-2025-40911","GHSA-p745-hrr6-rg8c","UBUNTU-CVE-2025-40911"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Perl IP CIDR library","requires_auth":"none","summary":"Attackers can bypass IP-based access controls by using leading zeros in CIDR strings, affecting Perl applications using Net::CIDR::Set.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-1287","name":"Improper Validation of Specified Type of Input"}],"description":"Net::CIDR::Set versions 0.10 through 0.13 for Perl does not properly handle leading zero characters in IP CIDR address strings, which could allow attackers to bypass access control that is based on IP addresses.\n\nLeading zeros are used to indicate octal numbers, which can confuse users who are intentionally using octal notation, as well as users who believe they are using decimal notation.\n\nNet::CIDR::Set used code from Net::CIDR::Lite, which had a similar vulnerability CVE-2021-47154.","ecosystems":[],"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":"Security feature bypass in Net::CIDR::Set","id":"CVE-2025-40911","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2025"},"n_packages":0,"n_references":3,"next":{"headline":"CryptX for Perl before version 0.065 contains a dependency that may be susceptible to malformed unicode","id":"CVE-2025-40912"},"packages":[],"prev":{"headline":"Net::IP::LPM version 1.10 for Perl does not properly consider leading zero characters in IP CIDR address strings, which could allow attacker","id":"CVE-2025-40910"},"products":["Net::CIDR::Set"],"published":"2025-05-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"partial"},"state":"PUBLISHED","updated":"2025-05-28","vendors":["RRWO"]},"summary":"Attackers can bypass IP-based access controls by using leading zeros in CIDR strings, affecting Perl applications using Net::CIDR::Set.","url":"https://insights.sbomify.com/CVE-2025-40911/"}