Quick answers
- Is CVE-2026-33285 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-33285 being exploited in the wild.
- How severe is CVE-2026-33285?
- Low severity, with a CVSS score of 3.1, published 25 March 2026.
- Which products and versions are affected?
- liquidjs (npm) SEMVER:introduced=0,last_affected=10.24.0.
- Is there a fix for CVE-2026-33285?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-33285 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-33285?
- Check whether you run liquidjs (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a logic error in the memoryLimit enforcement mechanism. When LiquidJS evaluates reverse range expressions (e.g., `(100000000..1)` where low > high), it computes memory usage as `high - low + 1`, yielding a negative value. The Limiter.use() method fails to validate that the count parameter is non-negative, allowing the internal counter to go negative. This negative balance permits subsequent legitimate memory allocations to bypass the configured limit. Combined with V8's cons-string optimization (where repeated string concatenation creates a tree structure consuming minimal memory), an attacker can build a 134MB logical string using only kilobytes. When a filter like `replace` forces V8 to flatten the cons-string into contiguous memory, the allocation request (~268MB) triggers an uncatchable V8 Fatal error that immediately terminates the Node.js process. Attack precondition: the attacker must control the Liquid template source code (e.g., via user-supplied templates in a web application). No patch is currently available.
Affected products
- harttle LiquidJS <=10.24.x
Identifiers
- CVE-2026-33285
- GHSA-9r5m-9576-7f6x
Timeline
- 2026-03-25: disclosed