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CVE-2026-56018

JavaScript::Minifier::XS versions before 0.16 for Perl leak memory on every call to minify(), allowing unbounded memory growth. In JsMinify (XS.xs) the cleanup frees only the NodeSet structures and never the per-token contents buffers allocated in JsSetNodeContents; JsDiscardNode unlinks nodes without freeing their contents. Each token's contents buffer is therefore leaked on every call, and the two early returns taken when the node list is empty leak the whole NodeSet. A long-lived process th
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e71b1dee128e467e1925f8940223ae625ab1ea94be85fcd6071f43a511668f41
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-401","description":"CWE-401 Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"JavaScript-Minifier-XS","product":"JavaScript::Minifier::XS","programFiles":["XS.xs"],"programRoutines":[{"name":"JsMinify"}],"repo":"https://github.com/bleargh45/JavaScript-Minifier-XS","vendor":"GTERMARS","versions":[{"lessThan":"0.16","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-401","description":"CWE-401 Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/06/29/17"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/adp/1/references/0
{"tags":["issue-tracking"],"url":"https://github.com/bleargh45/JavaScript-Minifier-XS/issues/10"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/cna/references/0
{"tags":["release-notes"],"url":"https://metacpan.org/release/GTERMARS/JavaScript-Minifier-XS-0.16/changes"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b9677b10af8db9e3485e9b8288d013380e4ddaf9188d35cf228761bc6f7a85a3 · sha256:55fa4be7e45bd9b3… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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