CVE-2026-27942

ADVISORY - github

Summary

Impact

Application crashes with stack overflow when user use XML builder with prserveOrder:true for following or similar input

[{
    'foo': [
        { 'bar': [{ '@_V': 'baz' }] }
    ]
}]

Cause: arrToStr was not validating if the input is an array or a string and treating all non-array values as text content. What kind of vulnerability is it? Who is impacted?

Patches

Yes in 5.3.8

Workarounds

Use XML builder with preserveOrder:false or check the input data before passing to builder.

References

Are there any links users can visit to find out more?

EPSS Score⁠: 0.0005 (0.152)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-120⁠

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

ADVISORY - github

CWE-120⁠

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

ADVISORY - redhat

CWE-776⁠

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Impacted images

Advisories

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