CVE-2026-56017 Affecting perl-javascript-minifier-xs package, versions <0.16-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE324-PERLJAVASCRIPTMINIFIERXS-18310116
- published26 Jul 2026
- disclosed29 Jun 2026
Introduced: 29 Jun 2026
CVE-2026-56017 (opens in a new tab)How to fix?
Upgrade Alpine:3.24 perl-javascript-minifier-xs to version 0.16-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perl-javascript-minifier-xs package and not the perl-javascript-minifier-xs package as distributed by Alpine.
See How to fix? for Alpine:3.24 relevant fixed versions and status.
JavaScript::Minifier::XS versions before 0.16 for Perl crash with a NULL pointer dereference when the first meaningful token of the input is a slash.
The regexp versus division disambiguator in JsTokenizeString (XS.xs) inspects the previous token's last byte to choose between a regexp literal and a division operator. When a slash is the first meaningful token, with the start of input or only whitespace and comments before it, there is no valid preceding token: the walk back over whitespace and comment nodes runs off the head of the node list to NULL, and the byte lookup reads through a NULL contents pointer at an underflowed length index. The following identifier check dereferences the same NULL pointer.
The crash is reachable through the public minify() API, so input as small as a single slash byte crashes the calling process. A service that minifies untrusted or third-party JavaScript can be crashed by a remote request, causing denial of service.