{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-13713 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-13713 is a medium-severity use after free vulnerability in TODDR YAML::Syck, published on 16 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-13713 and fix it if it is affected.\n\nWhat it is: CVE-2026-13713 is a medium-severity use after free vulnerability in TODDR YAML::Syck, published on 16 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-13713 in the wild and no public exploit code.\n\nAffected product: TODDR YAML::Syck. 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-2026-13713/ (Markdown: https://insights.sbomify.com/CVE-2026-13713/index.md)","id":"CVE-2026-13713","markdown":"https://insights.sbomify.com/CVE-2026-13713/index.md","name":"CVE-2026-13713","record":{"aliases":["ALPINE-CVE-2026-13713","ALSA-2026:67269","AZL-109520","AZL-92904","BELL-CVE-2026-13713","DEBIAN-CVE-2026-13713","GHSA-p3p9-6pr6-mr9m","RHSA-2026:67269","RLSA-2026:67269","UBUNTU-CVE-2026-13713"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Perl YAML library","requires_auth":"none","summary":"Attackers can crash the Perl interpreter by supplying a crafted YAML document that triggers a use-after-free and double-free in the YAML::Syck library.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[],"cvss":{"score":6.2,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"},{"id":"CWE-415","name":"Double Free"}],"description":"YAML::Syck versions before 1.47 for Perl allow a use-after-free and double-free via an anchor node freed while still on the parser value stack.\n\nIn the bundled libsyck, when an anchor name is redefined or removed, syck_hdlr_add_anchor and syck_hdlr_remove_anchor free the node stored under that name with syck_free_node. That node can still be live on the parser's value stack, so syck_hdlr_add_node reaches it again and frees it a second time. On a normal build the 48-byte node chunk is freed twice and the interpreter aborts. Anchors need no special flags, so this is reached on the default Load path, and a 7-byte document that redefines an anchor triggers it.\n\nAny caller that runs Load or LoadFile on an untrusted document that redefines an anchor mid-parse crashes the interpreter, a denial of service.","ecosystems":["AlmaLinux:8","Red Hat:enterprise_linux:8::crb","Rocky Linux:8"],"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":"Use after free in YAML::Syck","id":"CVE-2026-13713","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":5,"n_references":2,"next":{"headline":"Realtyna Organic IDX plugin + WPL Real Estate \u003c 5.3.0 - Unauthenticated Arbitrary File Upload to Remote Code Execution","id":"CVE-2026-13714"},"packages":[{"ecosystem":"AlmaLinux:8","fixed":["1.30-7.el8_10"],"introduced":["0"],"last_affected":[],"package":"perl-YAML-Syck","purl":"pkg:rpm/almalinux/perl-YAML-Syck","source":"ALSA-2026:67269"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:1.30-7.el8_10"],"introduced":["0"],"last_affected":[],"package":"perl-YAML-Syck","purl":"pkg:rpm/redhat/perl-YAML-Syck","source":"RHSA-2026:67269"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:1.30-7.el8_10"],"introduced":["0"],"last_affected":[],"package":"perl-YAML-Syck-debuginfo","purl":"pkg:rpm/redhat/perl-YAML-Syck-debuginfo","source":"RHSA-2026:67269"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:1.30-7.el8_10"],"introduced":["0"],"last_affected":[],"package":"perl-YAML-Syck-debugsource","purl":"pkg:rpm/redhat/perl-YAML-Syck-debugsource","source":"RHSA-2026:67269"},{"ecosystem":"Rocky Linux:8","fixed":["0:1.30-7.el8_10"],"introduced":["0"],"last_affected":[],"package":"perl-YAML-Syck","purl":"pkg:rpm/rocky-linux/perl-YAML-Syck?distro=rocky-linux-8\u0026epoch=0","source":"RLSA-2026:67269"}],"prev":{"headline":"Divi 5.0 - 5.8.1 - Contributor+ Stored XSS via Social Media Follow Skype URL","id":"CVE-2026-13712"},"products":["YAML::Syck"],"published":"2026-07-16","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"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":"2026-07-17","vendors":["TODDR"]},"summary":"Attackers can crash the Perl interpreter by supplying a crafted YAML document that triggers a use-after-free and double-free in the YAML::Syck library.","url":"https://insights.sbomify.com/CVE-2026-13713/"}