{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-49940 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-49940 is a medium-severity vulnerability in RRWO Net::CIDR::Set, published on 4 Jun 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-2026-49940 and fix it if it is affected.\n\nWhat it is: CVE-2026-49940 is a medium-severity vulnerability in RRWO Net::CIDR::Set, published on 4 Jun 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-2026-49940 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-2026-49940/ (Markdown: https://insights.sbomify.com/CVE-2026-49940/index.md)","id":"CVE-2026-49940","markdown":"https://insights.sbomify.com/CVE-2026-49940/index.md","name":"CVE-2026-49940","record":{"aliases":["DEBIAN-CVE-2026-49940","GHSA-hpv8-77xm-27wx","UBUNTU-CVE-2026-49940"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Perl CIDR library","requires_auth":"none","summary":"Attackers can bypass network access controls by using non-ASCII Unicode digits in IP addresses and netmasks, causing incorrect parsing of network ranges.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[{"product":"net\\","vendor":"rrwo"}],"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-1289","name":"Improper Validation of Unsafe Equivalence in Input"}],"description":"Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks.\n\nUnicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers.  This could allow network masks to accept larger networks.","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":"Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks","id":"CVE-2026-49940","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses","id":"CVE-2026-49941"},"packages":[],"prev":{"headline":"Missing authorization in FortiPortal","id":"CVE-2026-49938"},"products":["Net::CIDR::Set"],"published":"2026-06-04","related":[{"cvss_score":7.5,"headline":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses","id":"CVE-2026-49941","kev_date_added":null,"published":"2026-06-04"},{"cvss_score":7.3,"headline":"Net::CIDR::Set versions through 0.20 for Perl did not validate network masks","id":"CVE-2026-49942","kev_date_added":null,"published":"2026-06-04"}],"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":"2026-06-04","vendors":["RRWO"]},"summary":"Attackers can bypass network access controls by using non-ASCII Unicode digits in IP addresses and netmasks, causing incorrect parsing of network ranges.","url":"https://insights.sbomify.com/CVE-2026-49940/"}