# Symfony Yaml Component vulnerabilities Source: https://junglewise.ai/threats/technologies/yaml Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/yaml.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 8 vulnerabilities in Symfony Yaml Component: 1 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-123792, was published on 6 November 2026. 2 vulnerabilities in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 1 - Last 30 days: 2 - Last 90 days: 3 - All time: 8 (0 critical, 0 exploited in the wild) ## About Symfony Yaml Component A PHP component that loads and dumps YAML files. ## Latest Symfony Yaml Component vulnerabilities - [CVE-2026-123792: Symfony Yaml component ReDoS in parser and inline](https://junglewise.ai/threats/cve-2026-123792-the-symfony-yaml-components-inline-and-parser-parse-some-yaml) (info, published 6 Nov 2026) - [CVE-2026-109413: Symfony YAML stack exhaustion in inline lexer](https://junglewise.ai/threats/cve-2026-109413-in-symfony-yaml-prior-to-versions-5-4-54-6-4-45-7-4-18-and-8-1-6) (high, CVSS 4, published 15 Oct 2026) - [CVE-2026-76833: cgauge yaml arbitrary code execution via eval injection](https://junglewise.ai/threats/cve-2026-76833-cgauge-yaml-arbitrary-code-execution-via-eval-injection) (high, CVSS 7.8, published 20 Aug 2026) - [CVE-2026-45305: Symfony Yaml ReDoS in Parser cleanup](https://junglewise.ai/threats/cve-2026-45305-symfony-yaml-redos-in-parser-cleanup) (medium, CVSS 4, published 14 Jul 2026) - [CVE-2026-45304: Symfony Yaml denial of service via recursive alias expansion](https://junglewise.ai/threats/cve-2026-45304-symfony-yaml-denial-of-service-via-recursive-alias-expansion) (medium, CVSS 4, published 14 Jul 2026) - [CVE-2026-45133: Symfony Yaml uncontrolled recursion in parser](https://junglewise.ai/threats/cve-2026-45133-symfony-yaml-uncontrolled-recursion-in-parser) (medium, CVSS 4, published 14 Jul 2026) - [CVE-2026-33532: yaml stack overflow via deeply nested collections](https://junglewise.ai/threats/cve-2026-33532-yaml-stack-overflow-via-deeply-nested-collections) (low, CVSS 3.1, published 25 Mar 2026) - [CVE-2023-2251: eemeli yaml uncaught exception in error printer](https://junglewise.ai/threats/cve-2023-2251-eemeli-yaml-uncaught-exception-in-error-printer) (low, CVSS 3.1, published 24 Apr 2023) ## Most severe Symfony Yaml Component vulnerabilities - [CVE-2026-76833: cgauge yaml arbitrary code execution via eval injection](https://junglewise.ai/threats/cve-2026-76833-cgauge-yaml-arbitrary-code-execution-via-eval-injection) (high, CVSS 7.8, published 20 Aug 2026) - [CVE-2026-109413: Symfony YAML stack exhaustion in inline lexer](https://junglewise.ai/threats/cve-2026-109413-in-symfony-yaml-prior-to-versions-5-4-54-6-4-45-7-4-18-and-8-1-6) (high, CVSS 4, published 15 Oct 2026) - [CVE-2026-45305: Symfony Yaml ReDoS in Parser cleanup](https://junglewise.ai/threats/cve-2026-45305-symfony-yaml-redos-in-parser-cleanup) (medium, CVSS 4, published 14 Jul 2026) - [CVE-2026-45304: Symfony Yaml denial of service via recursive alias expansion](https://junglewise.ai/threats/cve-2026-45304-symfony-yaml-denial-of-service-via-recursive-alias-expansion) (medium, CVSS 4, published 14 Jul 2026) - [CVE-2026-45133: Symfony Yaml uncontrolled recursion in parser](https://junglewise.ai/threats/cve-2026-45133-symfony-yaml-uncontrolled-recursion-in-parser) (medium, CVSS 4, published 14 Jul 2026) - [CVE-2023-2251: eemeli yaml uncaught exception in error printer](https://junglewise.ai/threats/cve-2023-2251-eemeli-yaml-uncaught-exception-in-error-printer) (low, CVSS 3.1, published 24 Apr 2023) - [CVE-2026-33532: yaml stack overflow via deeply nested collections](https://junglewise.ai/threats/cve-2026-33532-yaml-stack-overflow-via-deeply-nested-collections) (low, CVSS 3.1, published 25 Mar 2026) - [CVE-2026-123792: Symfony Yaml component ReDoS in parser and inline](https://junglewise.ai/threats/cve-2026-123792-the-symfony-yaml-components-inline-and-parser-parse-some-yaml) (info, published 6 Nov 2026) ## Vulnerabilities per week 2 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 1 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 1 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 1 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Symfony technologies - [Symfony HtmlSanitizer](https://junglewise.ai/threats/technologies/htmlsanitizer): 9 vulnerabilities - [Symfony Security HTTP](https://junglewise.ai/threats/technologies/security-http): 5 vulnerabilities - [Symfony UX Live Component](https://junglewise.ai/threats/technologies/ux-live-component): 4 vulnerabilities - [Symfony Http Foundation](https://junglewise.ai/threats/technologies/http-foundation): 3 vulnerabilities - [Symfony HttpClient](https://junglewise.ai/threats/technologies/httpclient): 3 vulnerabilities - [Symfony Mime](https://junglewise.ai/threats/technologies/mime): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Symfony Yaml Component vulnerabilities", https://junglewise.ai/threats/technologies/yaml, 9 November 2026.