{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-77781 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-77781 is a high-severity denial of service vulnerability, published on 21 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-2026-77781 and fix it if it is affected.\n\nWhat it is: CVE-2026-77781 is a high-severity denial of service vulnerability, published on 21 Aug 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-2026-77781 in the wild and no public exploit code.\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-2026-77781/ (Markdown: https://insights.sbomify.com/CVE-2026-77781/index.md)","id":"CVE-2026-77781","markdown":"https://insights.sbomify.com/CVE-2026-77781/index.md","name":"CVE-2026-77781","record":{"aliases":["DEBIAN-CVE-2026-77781","GHSA-fwmp-gxj5-29mj","UBUNTU-CVE-2026-77781"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Perl regex hash library","requires_auth":"none","summary":"An attacker can cause a denial of service by supplying malformed regex keys to a Perl application using Tie::Hash::Regex, triggering an unhandled exception.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"}],"description":"Tie::Hash::Regex versions before 2.0.0 for Perl will throw an exception on unparseable lookup keys.\n\nThe FETCH, EXISTS and DELETE methods throw an exception when on malformed regular expressions.\n\nEach method falls back to a regex match when the key is not already stored in the hash, compiling the caller's key with a bare qr// and no eval guard. A key that is not a valid regular expression pattern, such as a single unmatched bracket, dies.\n\nAn application that looks up externally supplied strings in a tied hash will die on an invalid key.","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":"Tie::Hash::Regex versions before 2.0.0 for Perl will throw an exception on unparseable lookup keys","id":"CVE-2026-77781","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Rank Math SEO \u003c 1.0.277.1 - Unauthenticated Password-Protected Post Content Disclosure via Post Metadata and llms.txt","id":"CVE-2026-77782"},"packages":[],"prev":{"headline":"Missing authorization in Prospero Flow CRM","id":"CVE-2026-77780"},"products":[],"published":"2026-08-21","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-27","vendors":[]},"summary":"An attacker can cause a denial of service by supplying malformed regex keys to a Perl application using Tie::Hash::Regex, triggering an unhandled exception.","url":"https://insights.sbomify.com/CVE-2026-77781/"}