{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19487 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-19487 is a medium-severity vulnerability, published on 13 Aug 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-2026-19487 and fix it if it is affected.\n\nWhat it is: CVE-2026-19487 is a medium-severity vulnerability, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19487 exists.\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-2026-19487/ (Markdown: https://insights.sbomify.com/CVE-2026-19487/index.md)","id":"CVE-2026-19487","markdown":"https://insights.sbomify.com/CVE-2026-19487/index.md","name":"CVE-2026-19487","record":{"aliases":["AZL-95756","BELL-CVE-2026-19487","CLSA-2026-1789043015","CLSA-2026-1789204224","DEBIAN-CVE-2026-19487","ECHO-f6c7-844b-6a34","GHSA-cg68-cm33-8vqv","MINI-gw6q-gcc9-gpwm","MINI-q9f6-w44g-cwv7","OESA-2026-3930","OESA-2026-3931","OESA-2026-3932","OESA-2026-3933","OESA-2026-4013","UBUNTU-CVE-2026-19487"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Perl regex engine","requires_auth":"none","summary":"Perl regex engine incorrectly matches patterns due to a stale flag, potentially causing security filtering or access control decisions to fail.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-670","name":"Always-Incorrect Control Flow Implementation"}],"description":"Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in S_find_byclass.\n\nThe prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one recorded. A failing transition sets the failed flag, and a later successful transition does not clear it, so the prescan reads the stale flag as a failure and stops before it can record a candidate that starts earlier. It takes a subject where one candidate is recorded and a later character then forces a fallback through a fail link that succeeds.\n\nExample:\n\n  \"ABCDE\" =~ m/ABCF|BCDE|C/;    # matches C at offset 2, not BCDE\n  \"ABCDE\" =~ m/ABCF|BCDE|C(G)/; # no match, BCDE missed\n\nAn alternation like this can miss input it should match, or match it on the wrong branch, so an access or filtering decision made from the result can be wrong.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick pr","id":"CVE-2026-19487","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Memory corruption in ADC","id":"CVE-2026-19489"},"packages":[],"prev":{"headline":"SSRF in Gemini Enterprise Agent Platform App Builder","id":"CVE-2026-19486"},"products":[],"published":"2026-08-13","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-13","vendors":[]},"summary":"Perl regex engine incorrectly matches patterns due to a stale flag, potentially causing security filtering or access control decisions to fail.","url":"https://insights.sbomify.com/CVE-2026-19487/"}