symfony/yaml (packagist) has 6 known vulnerabilities, the worst rated HIGH. Upgrade to 8.1.6 or later to clear all of them. No malicious-package signal is recorded.
Yaml\Parser::lexInlineStructure() recursed through lexInlineMapping() and lexInlineSequence() for every { and [ of an inline collection, without entering the…
CyberXYZ does not call a package safe in absolute terms. It records 6 known vulnerabilities for symfony/yaml (packagist), the worst rated HIGH, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does symfony/yaml have known vulnerabilities?
Yes. CyberXYZ records 6 known vulnerabilities for symfony/yaml (packagist), the worst rated HIGH. These include GHSA-2v3c-qxhr-7vpv, GHSA-2r5h-6r7v-5m7c, GHSA-7w53-hfpw-rg3g, GHSA-c2p3-7m5p-cv8x, GHSA-4qpc-3hr4-r2p4.
Which version of symfony/yaml should I use?
8.1.6 or later clears every advisory recorded for symfony/yaml (packagist). Check the release you pick before installing it.
How do I check symfony/yaml before installing?
Search symfony/yaml in CyberXYZ Check at https://cyberxyz.io/check?q=symfony%2Fyaml. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 13:08 UTC. The most recent advisory here was published 2026-10-27. Updated continuously from NVD, GHSA, OSV and CNA feeds.