High
LiquidJS has Exponential Memory Amplification through its replace_first Filter $& Pattern
Type: advisorySources: OSV
LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the `replace_first` filter in LiquidJS uses JavaScript's `String.prototype.replace()` which interprets `$&` as a back reference to the matched substring. The filter only charges `memoryLimit` for the input string length, not the amplified output. An attacker can achieve exponential memory amplification (up to 625,000:1) while staying within the `memoryLimit` budget, leading to denial of service. Version 10.25.1 patches the issue.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-33287
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 15:29 UTC · Revision 1
Source evidence
LiquidJS has Exponential Memory Amplification through its replace_first Filter $& Pattern
core-osv · Original sourcePublished 26 Mar 2026, 00:33 UTC
LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the `replace_first` filter in LiquidJS uses JavaScript's `String.prototype.replace()` which interprets `$&` as a back reference to the matched substring. The filter only charges `memoryLimit` for the input string length, not the amplified output. An attacker can achieve exponential memory amplification (up to 625,000:1) while staying within the `memoryLimit` budget, leading to denial of service. Version 10.25.1 patches the issue.
osv:CVE-2026-33287
Complete source record
{
"id": "4e5f6f882bc62b61eb4de0bd31ad883825f71f5b855234c303e68a42e2ffc445",
"url": "https://osv.dev/vulnerability/CVE-2026-33287",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "LiquidJS has Exponential Memory Amplification through its replace_first Filter $& Pattern",
"summary": "LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the `replace_first` filter in LiquidJS uses JavaScript's `String.prototype.replace()` which interprets `$&` as a back reference to the matched substring. The filter only charges `memoryLimit` for the input string length, not the amplified output. An attacker can achieve exponential memory amplification (up to 625,000:1) while staying within the `memoryLimit` budget, leading to denial of service. Version 10.25.1 patches the issue.",
"evidence": "osv:CVE-2026-33287",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-33287",
"aliases": [
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"GHSA-6q5m-63h6-5x4v"
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
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"affected": [
{
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"type": "GIT",
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"modified": "2026-10-28T02:30:20.610800795Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33287.json",
"https://github.com/harttle/liquidjs/security/advisories/GHSA-6q5m-63h6-5x4v",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33287",
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 486538,
"published_at": "2026-03-26T00:33:20.024+00:00"
}