{"id":"CVE-2026-45357","sourceIdentifier":"security-advisories@github.com","published":"2026-06-17T23:17:03.893","lastModified":"2026-06-22T18:27:30.807","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"LiquidJS is a Shopify/GitHub Pages compatible template engine written in pure JavaScript. In versions 10.25.7 and below, the date filter's strftime implementation parses width specifiers like %9999999d and forwards the captured width unchecked into pad()/padStart(), leading to memory and render limit bypass. In src/util/underscore.ts, the pad loop performs unbounded string concatenation without consulting the Context's memoryLimit or renderLimit, so a single small template ({{ x | date: '%5000000d' }}) produces megabytes of output and unbounded CPU. The memoryLimit and renderLimit options the docs (src/liquid-options.ts:87-92) advertise as DoS controls — and which the docstring explicitly mentions for strftime — are entirely bypassed. Exploitation can cause large memory allocations, high CPU usage, or OOM crashes per render. This issue has been fixed in version 10.26.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"harttle","product":"liquidjs","versions":[{"version":"< 10.26.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-18T12:48:36.994250Z","id":"CVE-2026-45357","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-400"}]}],"references":[{"url":"https://github.com/harttle/liquidjs/commit/3129d46dc95efa357b00e5a57ee1af80a13d72ed","source":"security-advisories@github.com"},{"url":"https://github.com/harttle/liquidjs/releases/tag/v10.26.0","source":"security-advisories@github.com"},{"url":"https://github.com/harttle/liquidjs/security/advisories/GHSA-hh27-hf48-9f5q","source":"security-advisories@github.com"},{"url":"https://github.com/harttle/liquidjs/security/advisories/GHSA-hh27-hf48-9f5q","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}