CVE-2026-53723: guzzlehttp/guzzle-services' XML Request Serialization Vulnerable to XML Injection via CDATA Terminator

medium Affects guzzlehttp/guzzle-services. Feed 2026.10.29.1, updated 2026-10-28; published 2026-06-11; advisory modified 2026-07-15.

guzzlehttp/guzzle-services' XML Request Serialization Vulnerable to XML Injection via CDATA Terminator

Package: guzzlehttp/guzzle-services Composer
Affected versions: <1.5.4
Fixed in: 1.5.4
Severity: medium CVSS 5.8
Exploitation: not on CISA KEV · EPSS 0% (12.4th percentile)
Published: 2026-06-11
Source: osv.dev

References

CWE-20 CWE-91

NVD record guzzlehttp/guzzle-services advisories

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